I've build my first, fairly simple & straightforward site with Umbraco. For my next project, I want viewers (internetsurfers) of the site have the ability to create an account, login and view custom content (downloadable files, plus a function to show files that have been added since they last logged on.)
Does anybody know of any documentation that might help tackling this? Or can anybody give any pointers about how to go about this with Umbraco?

Maybe this question is too general, in which case I'll try something else.

Thanks,
Emiel