I know that this is probably asked a thousand times, but I couldn't help myself finding the answer!
I'm extremely new to the K2 component but I've heard only superb things about it!

The thing is that I was using a personal blog component through which my entire site was hacked. Now I've read that K2 is a great blogging component so what I was wondering was:

How to set up a blog for each user that is registered on the site, how to change its layout so I could modify its design and, last but not least, how to get the last 5 blog posts (as titles) in my news category? (The last one is a bonus, if anyone could help me with the first two I'd be very grateful!)