Can someone provide a few example sentances using the various possibilities i.e. żeby, żebym, żebys with this word and then translate into English. Also could you explain when it's best to use it?
What's exactly your problem?
You use it when you need to use it - simples...
Sorry but your question is not specific enough to answer it any other way.
Chciał, żebym został - he wanted me to stay
Pracuję, żeby mieć pieniądze - I work (in order) to have money
Mama prosiła, żebyś kupił chleb - mother asked you to buy bread