Questions, Questions, Questions.

[deernathasha]

When it comes to editing ljs, I'm hopeless. I've tried the Help page, and sadly, I really don't understand any of this technobabel. So here are a few pressing questions I have for those of you who are lj experts (or just a lot more smarter than me)...

• When posting to a community page, how can I post links with phrases like I can do with lj cut?
  
• How can I post a link to a user/community when I credit them on the Comments box using Manage Userpics?
  
• How can I make slick bios like this one? Ex: http://mediaspider.livejournal.com/profile
  
• What exactly is Custom CSS, and what can I do with it?
  

It would be REALLY great if any of you have the answers to these questions, I'll be forever thankful! Help is always appreciated!