I've found that CAP 413 is a great guide throughout my training but have also found that you can't just learn it parrot fashion. For example, yesterday I requested engine start and the controller came back with engine start approved and gave me taxi instructions for departure.
I'm not saying there was a problem with that, it did reduce the amount of transmissions I had to make. The only thing was I wasn't quite ready to note down the info, but did manage to repeat back from memory.