Game selection – it is so easy to jump from game to game, so why would you not limit yourself to only games that are easy to beat. Why would you not invest 10 minutes observing before diving in?
Notes – I have to admit that I have never done this, as my online play has never been frequent enough for it to pay dividends. That is starting to change. In the real world, I have volumes of notes in my head. But online, it is important to write (or type) them down due to the larger field of players you will see and the greater difficulty involved in “remembering” on online person vs a physical one.
Stepping up – It is so easy to step it up to a bigger game when you are running well. The reason you should not is analogous to the reason you should never take the “double-up-to-catch-up” strategy in roulette. Once the cold streak hits, you will be wiped out. Stay at the same stakes and use you winnings to weather the storm, not to jump into a bigger storm.
Random thoughts from a lawyer, an accountant, a commodities trader, an ex-Marine and a WSOP Main Event money finisher that don't know as much as they wish they did...