Recruitment srtructure


I would appreciate if someone could give me some info on the recruitment process for investment banks.
After you apply for grad scheme, what happens next? Do you get the test first or the phone interview? Also do you get notified when are you going to be interviewed by the phone? If yes how long do you have to prepare for it? What type of tests do you have to do and how many days do you have until the deadline? And what type of tests (numerical and verbal)? Is there any websites to practise them or should I buy them from wikijobs?

Thank you in advance