diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 00000000..fc970631
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,18 @@
+{
+  "workbench.colorCustomizations": {
+    "activityBar.background": "#3399ff",
+    "activityBar.activeBorder": "#bf0060",
+    "activityBar.foreground": "#15202b",
+    "activityBar.inactiveForeground": "#15202b99",
+    "activityBarBadge.background": "#bf0060",
+    "activityBarBadge.foreground": "#e7e7e7",
+    "titleBar.activeBackground": "#007fff",
+    "titleBar.inactiveBackground": "#007fff99",
+    "titleBar.activeForeground": "#e7e7e7",
+    "titleBar.inactiveForeground": "#e7e7e799",
+    "statusBar.background": "#007fff",
+    "statusBarItem.hoverBackground": "#3399ff",
+    "statusBar.foreground": "#e7e7e7"
+  },
+  "peacock.color": "#007fff"
+}
\ No newline at end of file
diff --git a/lib/linked_list.rb b/lib/linked_list.rb
index 8dee5e8d..ce913c04 100644
--- a/lib/linked_list.rb
+++ b/lib/linked_list.rb
@@ -3,7 +3,7 @@
 class Node
   attr_reader :data # allow external entities to read value but not write
   attr_accessor :next # allow external entities to read or write next node
-
+  
   def initialize(value, next_node = nil)
     @data = value
     @next = next_node
@@ -12,120 +12,280 @@ def initialize(value, next_node = nil)
 
 # Defines the singly linked list
 class LinkedList
-    def initialize
-      @head = nil # keep the head private. Not accessible outside this class
-    end
-
-    # method to add a new node with the specific data value in the linked list
-    # insert the new node at the beginning of the linked list
-    def add_first(value)
-      raise NotImplementedError
+  def initialize
+    @head = nil # keep the head private. Not accessible outside this class
+  end
+  
+  # method to add a new node with the specific data value in the linked list
+  # insert the new node at the beginning of the linked list
+  def add_first(value)
+    # new_node = Node.new(value, @head)
+    # @head = new_node
+    @head = Node.new(value, @head)
+  end
+  
+  # method to find if the linked list contains a node with specified value
+  # returns true if found, false otherwise
+  def search(value)
+    current = @head
+    
+    if @head.nil?
+      return false
     end
-
-    # method to find if the linked list contains a node with specified value
-    # returns true if found, false otherwise
-    def search(value)
-      raise NotImplementedError
+    
+    until current.nil?
+      if current.data == value
+        return true
+      end
+      current = current.next
     end
-
-    # method to return the max value in the linked list
-    # returns the data value and not the node
-    def find_max
-      raise NotImplementedError
+    return false
+  end
+  
+  # method to return the max value in the linked list
+  # returns the data value and not the node
+  def find_max
+    current = @head
+    
+    return nil if current.nil?
+    
+    max = current.data
+    until current.nil?
+      if current.data > max 
+        max = current.data
+      end
+      current = current.next
     end
-
-    # method to return the min value in the linked list
-    # returns the data value and not the node
-    def find_min
-      raise NotImplementedError
+    return max
+  end
+  
+  # method to return the min value in the linked list
+  # returns the data value and not the node
+  def find_min
+    current = @head
+    
+    return nil if current.nil?
+    
+    min = current.data
+    until current.nil?
+      if current.data < min
+        min = current.data
+      end
+      current = current.next
     end
-
-
-    # method that returns the length of the singly linked list
-    def length
-      raise NotImplementedError
+    return min
+  end
+  
+  
+  # method that returns the length of the singly linked list
+  def length
+    current = @head
+    return 0 if current.nil? #empty list, length 0
+    
+    length = 0
+    until current.nil?
+      length += 1
+      current = current.next
     end
-
-    # method that returns the value at a given index in the linked list
-    # index count starts at 0
+    return length
+  end
+  
+  # method that returns the value at a given index in the linked list
+  # index count starts at 0
+  # returns inl if there are fewer nodes in the linked list than the index value
+  def get_at_index(index)
+    current = @head
+    length = 0
     # returns nil if there are fewer nodes in the linked list than the index value
-    def get_at_index(index)
-      raise NotImplementedError
-    end
-
-    # method to print all the values in the linked list
-    def visit
-      raise NotImplementedError
+    
+    if current == nil
+      return nil
     end
-
-    # method to delete the first node found with specified value
-    def delete(value)
-      raise NotImplementedError
+    
+    #calculate length
+    until current == nil
+      length += 1 
+      current = current.next
+    end 
+    
+    return nil if length < index
+    
+    current = @head #resetting 
+    result = current.data
+    
+    if index == 0 
+      return result
     end
-
-    # method to reverse the singly linked list
-    # note: the nodes should be moved and not just the values in the nodes
-    def reverse
-      raise NotImplementedError
+    
+    #return if index greater than the length of LL
+    (index + 1).times do
+      result = current.data
+      current = current.next
     end
-
-
-    ## Advanced Exercises
-    # returns the value at the middle element in the singly linked list
-    def find_middle_value
-      raise NotImplementedError
+    return result #current.data
+  end
+  
+  # method to print all the values in the linked list
+  def visit
+    current = @head
+    
+    #iterating thru and printing
+    until current.nil?
+      puts current.data
+      current = current.next_node
     end
-
-    # find the nth node from the end and return its value
-    # assume indexing starts at 0 while counting to n
-    def find_nth_from_end(n)
-      raise NotImplementedError
+    
+  end
+  
+  # method to delete the first node found with specified value
+  def delete(value)
+    return nil if @head.nil?
+    current = @head
+    
+    if current.data == value
+      @head = current.next
+      return @head
     end
-
-    # checks if the linked list has a cycle. A cycle exists if any node in the
-    # linked list links to a node already visited.
-    # returns true if a cycle is found, false otherwise.
-    def has_cycle
-      raise NotImplementedError
+    
+    before = nil
+    after = nil
+    
+    until current.next == nil? || current.next.data == value
+      current = current.next 
     end
-
-
-    # Additional Exercises 
-    # returns the value in the first node
-    # returns nil if the list is empty
-    def get_first
-      raise NotImplementedError
+    
+    return nil if current.next.nil? #breaking out once at end
+    
+    before = current 
+    after = before.next.next
+    before.next = after
+    
+  end
+  # p "*****"
+  # p "previous - #{next_node}"
+  # p "*****"
+  
+  # method to reverse the singly linked list
+  # note: the nodes should be moved and not just the values in the nodes
+  def reverse
+    previous_node = nil
+    current = @head
+    return nil if current.nil?
+    next_node = current.next
+    
+    current.next = nil
+    
+    until next_node.nil?
+      previous_node = current
+      current = next_node
+      next_node = current.next
+      current.next = previous_node #moving it backwards
     end
-
-    # method that inserts a given value as a new last node in the linked list
-    def add_last(value)
-      raise NotImplementedError
+    @head = current
+  end
+  
+  
+  ## Advanced Exercises
+  # returns the value at the middle element in the singly linked list
+  def find_middle_value
+    raise NotImplementedError
+  end
+  
+  # find the nth node from the end and return its value
+  # assume indexing starts at 0 while counting to n
+  def find_nth_from_end(n)
+    current = @head
+    
+    length = 0
+    until current.nil?
+      length += 1
+      current = current.next
     end
-
-    # method that returns the value of the last node in the linked list
-    # returns nil if the linked list is empty
-    def get_last
-      raise NotImplementedError
+    current = @head
+    
+    nth = nil
+    
+    result = (length - n) 
+    result.times do
+      nth = current.data
+      current = current.next
     end
-
-    # method to insert a new node with specific data value, assuming the linked
-    # list is sorted in ascending order
-    def insert_ascending(value)
-      raise NotImplementedError
+    return nth 
+  end
+  
+  # checks if the linked list has a cycle. A cycle exists if any node in the
+  # linked list links to a node already visited.
+  # returns true if a cycle is found, false otherwise.
+  def has_cycle
+    raise NotImplementedError
+  end
+  
+  
+  # Additional Exercises 
+  # returns the value in the first node
+  # returns nil if the list is empty
+  def get_first
+    current = @head # first node
+    
+    if current.nil? 
+      return nil # returns nil if the list is empty
+    else
+      return current.data # returns the value in the first node 
     end
-
-    # Helper method for tests
-    # Creates a cycle in the linked list for testing purposes
-    # Assumes the linked list has at least one node
-    def create_cycle
-      return if @head == nil # don't do anything if the linked list is empty
-
-      # navigate to last node
+  end
+  
+  # method that inserts a given value as a new last node in the linked list
+  def add_last(value)
+    if @head == nil 
+      @head = Node.new(value)
+      return @head
+    else
       current = @head
-      while current.next != nil
-          current = current.next
-      end
-
-      current.next = @head # make the last node link to first node
     end
+    
+    while current.next != nil
+      current = current.next
+    end
+    
+    last_node = Node.new(value)
+    current.next = last_node
+  end
+  
+  
+  # method that returns the value of the last node in the linked list
+  # returns nil if the linked list is empty
+  def get_last
+    current = @head
+    
+    return nil if current == nil
+    
+    until current.next == nil
+      current = current.next
+    end
+    return current.data
+  end
+  
+  # method to insert a new node with specific data value, assuming the linked
+  # list is sorted in ascending order
+  def insert_ascending(value)
+    raise NotImplementedError
+  end
+  
+  # Helper method for tests
+  # Creates a cycle in the linked list for testing purposes
+  # Assumes the linked list has at least one node
+  def create_cycle
+    return if @head == nil # don't do anything if the linked list is empty
+    
+    # navigate to last node
+    current = @head
+    while current.next != nil
+      current = current.next
+    end
+    
+    current.next = @head # make the last node link to first node
+  end
+  
+  
+  
 end