[Digital Jedi]

First do a search for the various profile mods available and actually try some of them out, even if you don't plan on using or keeping them. Most don't even bother modifying the database, as you can usually use your built in Custom Profile Fields to achieve most goals. A few edits to some memberinfo templates, and you can probably do most, if not all, of what you're trying to achieve.

I did some tinkering with them and designed my own YouTube video block as well as a Twitter feed, both of which also happen to be available as mods already. It was just fun trying.