Latest articles,comments and avatars n00bie problem:)

Hello,

I'm running the Edublogs theme and loving it, with all the cool plugins
But, as a n00bie, I have of course a few problems:

1. How to setup the Latest articles and latest comments on the homepage tab (just like Latest Blogs and forums tab on Edublogs homepage-bottom left)?
2. I cannot upload the user or blog Avatar, even with alt. option. What am I doing wrong?

Help,pls!

Thanks,

Darja