ow does wn skill work?

[A1rh3ad]

A few quick questions about weapon skills. I just made an ogre warrior and was raising the skill in each weapon type so I would never be left with a good weapon and no skill to use it. How does skill translate to hit/miss rate and are there level caps? How high of a skill would be good enough to swap for the next type in order to keep the rank raised without causing them to be too low to be useful (thinking jack of all trades = master of none)