Enjoy the flying and don't worry too much about the radio, you'll find all comes reasonably naturally after a while. When I first started it scared the s*** out of me but at some point it I just stopped thinking about it and found my self talking/listening normally. It helps if you're learning to fly at an airfield with full ATC as that throws you in the deep end right off, I was at Cranfield.
Have a look at CAP_413, there's a PDF with embedded audio that'll give some good examples and you'll probably need to study it for your FRTOL exam anyway.