For guidance on the basics of LaTeX, refer to Overleaf -- Learn LaTeX in 30 minutes or the guide document in this respository.
Find the appropriate LaTeX distribution for your OS on The LaTeX Project. After cloning this repository, you can open up .tex files in the corresponding editor to make edits and compile PDFs when you make updates.
TeXStudio is the recommended distribution for Linux. TeXLive and MacTeX are the reccomended distributions for Windows and MacOS respectively.
Overleaf may be used in a pinch, but you'll have to also upload any images if you want to compile them into your document. It is typically easier to go through one-time setup locally.