Hi all I'm new to owning a 340, I'm 17 and bought a 1988 1.7 as my first car which was probably a bad Idea but at least its interesting

. That said there are a number of issues with the car, predictably, which I'm ill equipped to deal with, the thinking behind buying it was that it was a lot cheaper than something newer and I could spend that saved money (and probably a lot more) on parts thus teaching myself some useful skills. Sadly due to Corona I still dont have my license and the car has been sitting since February.
Basically the idle is very high and uneven, its clearly burning a very rich mixture, the engine has some nasty run on and the radiator has a leak. I'm not completely useless at fixing things but I'd rather not mess with the carb, especially if it is leaking air, I don't mind trying to adjust it but I dont have much experience fixing carbs (other than on mowers

) i have bought a new air filter but was sent a £3 oil filter because I was dumb and bought it from a random place online, that said if anyone knows where to get one legit that would be great, otherwise I'll try my luck on Ebay, also the climate control fan dosent work which is anoying, it looks like it might be down to the heater solanoid? Anyway if anyone has any advice I'd really appreciate it, thanks in advance, stay safe