Learning to ride this trike, for me, was exciting, in part because it was a little scary.  I seemed to keep finding ways to apply pressure to the bars unevenly, and the front wheels would wobble back and forth rapidly.  At higher speeds, I was concerned that I might lose control.  But, I never have.  If I just ease up and stop applying pressure, the trike corrects itself.  I did some experimenting with steering the handlebars, and made this discovery- push on them: bad; pull on them: good.  (I suspect that this may be more of an issue for me than for most other Pocket riders.  At 6' tall and with fairly long arms, I might be close to being too big for the Pocket.  I think that the natural position of my arms tends to push my hands into the bar grips.  Maybe these handlebars don't really fit me very well.  Maybe I should try to get a set of the adjustable '06 bars, if they become available).  If I try pulling one bar and pushing the other, or applying pressure to the side, I can run into problems. So, I try not to do that anymore!  I still have some surprises with the steering is while I'm turning the grip-shift, but it's not too bad, I'm sure I'll improve with practice, and at least I can choose when to shift.  I also tend to produce unwanted steering input when I shift my weight in the  seat, or generally move around without thinking about the handlebars.  If I steer by gently pulling back on the side I want to turn to, though, everything is beautiful. 
  Leaning into the turns is fun.  Without leaning in, you would risk raising the inside wheel off the ground, or possibly even flipping the trike.   It's fun to use the slight brake-steer to my advantage on the windy downhills.  (The trike pulls slightly in the direction toward the side that you're braking on.)  Several times on Coyote Street, though, I have locked up one wheel with this technique.  I guess I just need to apply the brakes more evenly, and rely less on the brake-steer.

  The gearing on the Pocket is low, which suits me just fine.  The low gear of 17 gear-inches allows me to easily get up hills that were difficult on the mountain bike.

  Leaning back in the seat seems to be a key for me.  This position takes weight off of my butt, and I think I engage the glutes more in this position.  It also moves my arms back, so that , when relaxed, my hands naturally pull slightly on the handlebars rather than push on them.  (I think that my long arms tend to push forward on the bars a little too much when I sit in a more upright position.)  Leaning back also gives me a little more traction with the back wheel, and feels more balanced somehow.
  I need a lot of lumbar support, and the Catrike seat is not adjustable enough for me, but it's fine with the addition of an Eagle Creek inflatable lumbar pillow.