Welcome to Subeta! I think my personal favourite is Cursed, because the spending is low and the output is pretty decent :P

During site events, battling, restocking etc. are also good ways to make sP, but they probably require more learning/time input, so quests is the more obvious place to start :) There's lots to do on there so don't mind the fact you don't understand everything at once! Even I stumble across things I don't know now and then :P (Quite often tbh :P)

Love your outfit!

If you have any questions feel free to ask :)

Useful Links:

What to do on Subeta? Useful general information for newbies Finding friends (Chit Chat) SubetaLodge (Offsite item database, pet colours etc.)
FAQ