I came across this package called tkz-fct, used for drawing functions and graphs. Are there any articles or papers that show how to download it and learn it? Thank you. (I am using Winedit as my editor)
tkz-fct is part of texlive and miktex so you should have it anyway or can easily install it via
tlmgr or the miktex equivalent.
It includes an 89 page manual that is full of examples (although the text is in french). In texlive you can view that via
texdoc tkz-fct or see the pdf on the web at http://texdoc.net/texmf-dist/doc/latex/tkz-fct/tkz-fct-screen.pdf