can u do a tutorial about ppc and how to work with strings in ida pro?
PPC cannot be covered in one tutorial it also a low level language which means it's not as easy as other languages like C++ or C, there's tons of resources out there just search for PowerPC and you will find what you looking for.
When you learn PPC basics then you can start digging little bit more into IDA and other reversing apps. Also I don't use IDA much often so I don't know much about it I use ProDG debugger mainly to do almost everything.