Swallowing Pride and asking for help

[DCHI194]

I started like most players in that I saw Varkyoni win and then Moneymaker and was hooked on the game. I started playing with play money in college 3-4 years ago and grew up to playing 20 buck sit n gos with friends
I had a decent rate of return on these tourneys and started toying with 1-2 in my local casino. I still play casino occasionally but the last few months I have been dumping money into Full Tilt. I am very serious about Poker and would like some advice.

I've read both Hellmuth books, Gordon's little Blue Book, Greatest Hand I ever played, Bluff Magazine, Listen to the Poker Edge among others. My understanding of the game is pretty solid though certainly not expert.

I would like to play to supplement my income and because I love the game so much. i am decent at putting people on hands and 7.5/10 times I can run my 100 dollar buy in to at least 200 and sometimes 400 bucks. However I generally develop a leak there and lose all the way back to 100 if not to 0. I guess my questions are the following:

Should I drop down to .15/.30 to build a bankrool using the traditional measures of bankroll status (20 Buy ins before moving up a level)?

I had a little bit of money to play with that could fund an initial bankroll...

Second question is ive heard about things like cardrunner and poker tracker...are these things I should look into to help my game?

Are there any books that are must reads that I have missed?

Thanks for any and all comments. I really take this seriously and would love to get a dialogue going. Thanks again...