How do I install TeX/LaTeX on Windows

You can choose between TeX Live and MiKTeX. In practice, it does not make a difference in which distribution you use. Especially if you are new to LaTeX. However, you should take care that you install the full version, with all packages, and not a minimal or base version.

You get MiKTeX from here (choose the 'MiKTeX 2.9 Net Installer') and TeX Live here.

Both install a basic editor (TeXworks). I have the experience from my workshops with students, that they have problems with that editor. I introduced TeXstudio which worked quite well in the lectures.

Some hints beside the selection of distribution: Don't install it in the programs folder.

You may get problems with the authorization concept of win7.

And important: No spaces in installation path! Some tools will get problems.