There are many forums which can help you out with that.
Here are a few of them listed, check them out by starting from #1.
http://www.nextgenupdate.com/forums/
http://www.ps3hax.net/
http://www.thetechgame.com/Forums.html(http://www.thetechgame.com/Forums/f=60/playstation-3-forum.html) Ask me anything... i have a jailbroken(CFW) D-rex ps3 myself and i have helped others to jailbreak there ps3's over skype.
These are enough i guess.
Before you do anything read this!!!:
- Make sure your ps3 is on FW 3.55 or lower
- Do NOT follow YouTube videos to jailbreak/downgrade your ps3 if it's not on FW 3.55 or lower.
- If your ps3 is on FW 3.56 or higher, it WILL cost you money to have a jailbroken ps3.
- Be aware that you need experience with a jailbroken ps3 once you have it. Read a lot on forums about it, ask trusted people for help and don't go online on a jailbroken/CFW ps3 before understanding the banning system of sony. (USE A CSID CHANGER)
FuroowHD