Don't worry about first year brah, by all means learn new stuff otherwise you'd be wasting your money obviously but the assignments you only need 40% to pass which means it's near impossible to fail. Thing is, you might think trying your hardest to get a 2.1/1st or whatever sounds like a good idea at first but then you realize you get a 1st and it doesn't even count towards your degree and makes you feel just as **** as if you were to get a 2.2. Take first year to relax while you can, i'm about to go into second year and i'm going to have to start getting serious now so enjoy it while it lasts because the 2 years after that aren't going to be as fun as first I imagine.