This is probably too simplistic. Do not claim horses from good trainers. You will most likely not make them better.

I just use my phone to use my online account. It makes a lot less stressful.

When you have a horse that you like at 22 to 1, make sure that you bet some money to win. Why fool around with exotics. The derby may be the exception to the rule though.  If you are playing AK on top of exotics bet a few dollars to win. I learned my lesson a few years ago when Sarava won the Belmont at 70 to 1. I had not cashed a ticket Friday or Saturday until the saver bet on AK. I have been smiling ever since.