The bike also dies when I shift into first gear, I would assume that points towards a clutch issue but I wouldnt really know where to start diagnosing that kind of issue.
Looks like you need to have a look inside the carbs. As the others have said, it's not really very difficult. Main thing is to be methodical and use tools that fit. If you don't have the tools, buy them - you'll use them again and again. If you don't have JIS screwdrivers, definitely buy some.
Engine stops when you shift into first sounds like clutch is dragging. It might free off if you pull the clutch lever and kick the engine over. While there is resistance to your kick, the clutch is dragging, when your kick swings right through with no effort you've released the drag. You might need to adjust the clutch, in fact you will definitely need to adjust the clutch from time to time, so look for the how to threads in the tech section.
You're getting there!