diff --git a/src/index.ts b/src/index.ts
index 5c18459..6462f47 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -3,14 +3,100 @@ import {
   JupyterFrontEndPlugin
 } from '@jupyterlab/application';
 
+import { INotebookTracker, NotebookActions } from '@jupyterlab/notebook';
+
 /**
  * Initialization data for the nbactions extension.
  */
 const plugin: JupyterFrontEndPlugin<void> = {
   id: 'nbactions:plugin',
   autoStart: true,
-  activate: (app: JupyterFrontEnd) => {
+  requires: [INotebookTracker],
+  activate: (app: JupyterFrontEnd, notebooks: INotebookTracker) => {
     console.log('JupyterLab extension nbactions is activated!');
+
+    // Do something with the current notebook widget
+    const currentNotebook = notebooks.currentWidget?.content;
+    const sessionContext = notebooks.currentWidget?.sessionContext;
+    if (!currentNotebook) {
+      return;
+    }
+
+    // Jupyter.notebook.ncells()
+    console.log(`We have ${currentNotebook.model?.cells?.length} cells`);
+    // Also you can use .widgets, which is the array of cells widgets
+    currentNotebook.widgets.length;
+
+    // Change the active cell
+    currentNotebook.activeCellIndex = 5;
+
+
+    // Jupyter.notebook.cells_to_code([0])
+    // Jupyter.notebook.cells_to_markdown([0])
+    // Jupyter.notebook.get_cell(0).set_text(arguments[0])
+    // Jupyter.notebook.get_cell(0).render()
+    // Jupyter.notebook.get_cells()
+
+    // Jupyter.notebook.insert_cell_below()
+    NotebookActions.insertBelow(currentNotebook);
+
+    // Jupyter.notebook.delete_cell(-1)
+    NotebookActions.deleteCells(currentNotebook);
+
+    // Select the first cell (selection does not have to be contiguous)
+    currentNotebook.select(currentNotebook.widgets[0]);
+
+    // Clear selection
+    currentNotebook.deselectAll();
+    // Clear selection with some error handling
+    NotebookActions.deselectAll(currentNotebook);
+
+    // Jupyter.notebook.scroll_cell_percent(arguments[0], arguments[1], 0)
+    // Jupyter.notebook.toJSON()    // this is to download notebook
+    // Jupyter.notebook.scroll_manager.is_cell_visible(Jupyter.notebook.get_cell(arguments[0]))
+
+    // Jupyter.notebook.kernel.name
+    sessionContext?.session?.kernel?.name;
+
+    // Jupyter.kernelselector.kernelspecs
+    // Jupyter.kernel_list.kernelspecs
+    // Jupyter.kernelselector.set_kernel(arguments[0])
+
+    // Jupyter.notebook.kernel.interrupt()
+    sessionContext?.session?.kernel?.interrupt();
+
+    // Jupyter.notebook.kernel.restart()
+    sessionContext?.session?.kernel?.restart();
+
+    // Jupyter.notebook.kernel.is_connected()
+    sessionContext?.session?.kernel?.connectionStatus === 'connected';
+
+    // Jupyter.notebook.kernel.complete(arguments[0], arguments[1], completeCallback)
+    // Jupyter.notebook.kernel.inspect(arguments[0], arguments[1], inspectCallback)
+
+    // Clear all outputs
+    // Jupyter.notebook.clear_output() ???
+    NotebookActions.clearAllOutputs(currentNotebook);
+
+    // Clear selected outputs
+    // Jupyter.notebook.clear_cells_outputs(Jupyter.notebook.get_selected_cells_indices())
+    NotebookActions.clearOutputs(currentNotebook);
+
+    // Jupyter.notebook.toggle_cells_outputs_scroll(Jupyter.notebook.get_selected_cells_indices())
+    NotebookActions.enableOutputScrolling(currentNotebook);
+    NotebookActions.disableOutputScrolling(currentNotebook);
+
+    // Jupyter.notebook.execute_selected_cells()
+    NotebookActions.run(currentNotebook, sessionContext);
+
+    // Jupyter.notebook.save_checkpoint()
+    // Jupyter.notebook.save_notebook()
+    // Jupyter.notebook.scroll_manager.animation_speed = 0; Jupyter.notebook.scroll_manager.scroll_some(arguments[0])
+    // Jupyter.notebook.rename(arguments[0])
+
+
+    // Insert a cell about the current active cell
+    NotebookActions.insertAbove(currentNotebook);
   }
 };