Hi, I need some help on American tax system. Been in the u.S.A. last year. Will be liable to tax payments soom, I guess. worked as an R.A., got about 5,000 dllars. (1) Am not in the U.S.A. now, and won't go back. Will I get tax bill to my address here?(It's registered at school. They know my address) (2) What kind of documents will I need? I've brought an NR-14 when I came back, but that's not enough I guess. (3) When is the deadline for paying taxes? Would appreciate your kind advice, A.