As you are new to this Forum, take a bit of time to read through as Mike already mentioned, the many useful and informative sections.
Tutorials a good place to start..
and then as you are aware there are different sections,as you mentioned Windows 7, for instance, where, there is always 'stickys' at the top .
Inevitably in the fast moving computer world,things change on a daily basis,so if you use the search link, with word describing your interest, a load of info will soon show up, that way the Boards do not become too cluttered with every new bit .
Hope this helps and that you stick around,finding and assisting with some useful info.