I always indicate left to say I'm coming off the roundabout (unless it is a mini one), just not on approach for a "straight on".
Your car's positioning is as much an indicator. It is like body language as you gain experience, like when you know someone is going to come all the way round the roundabout despite having no indicator on, as you are reading their road positioning.
I'm 19 with 2 years no claims and I've declared everything (lowering, full suspension Change , full interior change , boot build , head unit , wheels , exhaust , intake system , tinted lights ) yet mine is only 650
Probably makes a big difference being a Fusion though...
If you have a USB port, you should have the bluetooth and USB module fitted. Which means it should be able to play music from a USB. Your phone will need to be in Mass Storage mode for the car to read it though.
Otherwise try putting a few mp3s on a USB stick and flicking through the sources on the car to see if it finds the USB and tracks.