3) Do not invest or gamble away your bitcoins with any service or person who guarantees returns
This bears repeating, since it's a significant source of loss for new members...
If you see a post or website promising any return (even 1% a day), stay clear. They are called ponzi scams, and they will take your coins and run.
Yup, caveat emptor should be the motto of this forum (imo).
On the more technical side, I noticed that no one pointed you to the bitcoin wiki (where there's loads of fun info):
https://en.bitcoin.it/wiki/Main_PageCheers and welcome!