hmmmm, tips on Reversi (Othello people lets get it right).
i could sit here typing out a huge essay on strategy patterns, traps and concepts, but as its already been done for me.
here are the links you need to survive:
These are probably the best sources of information - some of the articles published on the Othellogateway may be a little complicated to start off.
The final link ill give you is
which is a much better place to learn and play.