HI guys so I'm very new to the PS3 hacking scene and wanted some advice.

Currently I have a NOR PS3 4.55 CECHM03. Now I know for a fact that I'll need an E3 Flasher or similar device to downgrade to the golden 3.55 firmware. Now I have some questions regarding this.

If I were to buy say a knackered PS3 Phat that has been jailbroken and includes the hard drive would I be able to simply swap the hdds over?

Additionally, where can I start with all this?