NEED HELP! Very Lost!!!!! Vector Calc

I posted some of the same questions on my other post a few days back. Mr. Fantastic helped me but i want to put them on here to start afresh. Please help me understand on how to do these problems. I have to equation and the book right here but i really dont understand it. If you could help me step by step i would really appreciate it!!!!!

1) If F = (3z - sinx)i + (x^2 + e^y)j + (y^3 - cosz)k, use Stoke's theorem to evaluate integral with lower terminal C [ F.dr] where C is given by x=cost, y=sint, z=1; 0<= t <= 2pie

2) Let S be the first-octant portion of the plane x + y + z =1. Verify Stokes' Theorem for the vector field F = y^2i + z^2j + x^2k

THe part i really dont get is how to do the line integral and the conditions of each terminal. Please help