Blog Help!

As I am a novice to this, I could use a little help.

(1) How do I search for blogs posted by friends?
(2) How do I add a friend's blog link to my blog list?
(3) How in the heck do I get those pictures at the bottom of my blog a little bit smaller?!!??

I really am quite computer savvy, but I just can't quite wrap my brain around this one. LOL

Any other advice/hints/tips will be greatly appreciated!