Generally, you have to prepare such tools as dev. board, emulator and IDE to process further.
Most of the dev. boards have little difference for a certain type of MPU, you can buy from freescale or other manufacturers; As to IDE, you can use CodeWarrior made by freescale , if you do not mind the price.
I'm paying close attention to PowerPC tools recently, to buy is MPC8572 reference platform, used for network communication, and I'm now keeping in contact with the salesman of MICETEK.
MICETEK provides wide range of development boards based on PowerPC. You can also contact with them.The website is
www.micetek.com. You can visit it, and then make your decision.
Hope this message can help you.