Content and misc help :)

I would first like to say how not only is Drupal an excellent platform for anyone beginner or professional, but it has amazed me by how much i have learned from developing my site!

Anyway, would anyone be able to help me on any of the following issues?


1. Stories - I am using stories to welcome the user and to tell them about the site, is it possible to it shows certain stories to the anonymous users and then different stories to registered users? (For example an anonymous user will see a "Hello welcome, register?" and the already registered wont see that but will be "Welcome back, what are you going to do?")


2. Profiles - Where is the profile layout stored, I want to be able to change the layout of what the user sees.


3. Profiles - Is there anyway to enable the user to use FULL html and give them a blank node to do what they want with (yes MySpace style) I have used Organic Groups but I always seem to get errors)


4. Links - What are the user area links for example I want to create a link that takes them to their profile.


5. Friends - I'm using AJAX friends but my only problem is the fact it doesn't send the other user an e-mail or personal message asking for permission etc


That's it really, I've got the other things I need but thank you for any help!