On UNIX you have the texmf folder in your home directory where you store packages you've installed yourself, but where is that folder on a Windows install?. Yeah, I know that if you use MiKTeX then you don't need to worry about it since it installs needed packages on-the-fly, but I'm still interested. =).
Your own TEXMF root directories. You can register additional TEXMF root directories. For example, if you have files (such as LaTeX styles) that you want to integrate into the MiKTeX setup, you can do the following: Create a directory, say ~/mytexmf, which serves as the new TEXMF root directory.
This manual was originally translated from LATEX.HLP v1.0a in the VMS Help Library. The pre-translation version was written by George D. Greenwade of Sam Houston State University.
Feb 26, 2018 · It is necessary that you refresh the FNDB whenever you manually install TeX/LaTeX-related files in a user-managed TEXMF directory: Open the Tasks menu. Click Refresh file name database. Automatic package installation. MiKTeX has the ability to automatically install missing packages. You can turn this feature on or off.