IDK -- you've been on iHub for quite awhile, and you say you "used" to own shares. If there was significant interest, I'd have thought you'd have checked in more frequently.
Given that, it's really just too much to explain right now.
If you don't own shares "today", then it's pretty much a moot point.
But, for a generalized background, read the Q&A in the stickies.
...Catz