That Riding the pitch tchnique is awesome especially when learning, it also looks more pro. Just remember if you've had to speed the track up a littleto get it back into sync then you have to reduce the speed a little once it is in..
Oh and make sure you don't touch the tune that is going through the speakers. I hate hearing Dj's adjusting the current track coz you get pitch bends and they sound shit.
If you are getting confused if the track you are mixing in is too fast or too slow, then experiment and just listen to the snares on both tracks, you'll here them either getting closer together or further apart, don't be scared to fuck up completely, we learn from our mistakes. keep practicing on the same tunes togther coz you'll learn the different drumsounds