Awesome LaTeX resources!:)
The Not So Short Introduction to LaTeX
LaTeX Tutorials (Dr. Trefor Bazett) (YouTube)
LaTeX Tutorials (featuring Texmaker) (YouTube)
LaTeX for Students, Engineers, and Scientists (edX)
Overleaf - Interactive Introduction to LaTeX
Introduction to LaTeX (Virtual Online Library Tutorials, University of California Berkeley)
Detexify (draw the symbol and this tool will find it for you)
EditTex (generate latex equations)
TeX - LaTeX Stack Exchange (a question and answer site for users of TeX, LaTeX, ConTeXt)