I've been looking at this site for a long time, but never decided to register until now!
I've been trying to learn Latin for years, and now I want to learn Greek as well. I've started by using John Taylor's Greek to GCSE and so far I'm finding it useful- at least I know more Greek now than I did a week ago! One of these days I'll get my head round how to type in Greek characters too!
There are many good resources on this site, and good links to other learning resources.