People who started off with flash or easytoon, generally find pivot harder to use at first, although their animations follow the rules of physics, and have easing/anticipation ect.
This is because, for one, Pivot is moving joints, not re drawing frames, and two, in order to look good, everything has to flow really well, and move super realisticly.
Zackfire: Its ok for a first, but I really recommend sticking with easytoon as your first, you are great with easytoon. However, I suggest you keep practicing with pivot, it helps alot.