Advice for a 'roll-builder

[vexvelour]

Maybe you guys can help me with this. I have a small bankroll right now for my online account. I planned in advance from reading numerous posts to start in micro NL, and work my way up to the larger games.

For my very first online game, I decided to go to a .25/.50 NL table, feeling confident I could do well. I doubled my entire poker buy in over maybe 60 hands. This seemed odd to me, and I thought maybe I was pushing my luck a bit. I decided perhaps I should move down in limits until I was confortable with the maximum .25/.50 NL buy in. Since then I've been playing .05/.10 and .10/.20 (NL) because I feel more comfortable with the max buy in with my bankroll. I cannot win significantly at those tables though. I don't know if it's the players, if it's because of the cards they play, or what. I'm tempted to take my money back to the (slightly) bigger tables, but am unsure if this would be disatrous. I have since given up on building my bankroll through cash games and have only been playing STTs, but I miss cash games.

Anyone have advice?