Thinking of going fixed for the first time. Anything I should Know

I have found that it is easier to lock the back wheel when breaking with fixed gears, because I am adding more resistance by slowing down the pedals the break can lock it very easily.

^This. With a geared bike the braking on the back wheel is all down to the brake. On a fixed-gear your legs obviously come into play. Since my emergency stop response is still to stop pedalling and apply both brakes, I much more often lock up the rear on my FG.