Online LaTeX https://www.overleaf.com/

BibTeX Style Examples http://www.cs.stir.ac.uk/~kjt/software/latex/showbst.html

For Special Characters https://www.noao.edu/noaoprop/help/symbols/

Bibliography Styles http://www.cs.stir.ac.uk/~kjt/software/latex/showbst.html

Figures and Tables https://faculty.math.illinois.edu/~hildebr/tex/tips-figures.html

Latex basics http://www.docs.is.ed.ac.uk/skills/documents/3722/3722-2014.pdf