bankroll building still feasible in micro?

Hi, I'm a beginner to online poker play. I've got a party poker account which I open a while back and have play some games with that, but nothing serious. I just stumbled across the 2+2 forums, and read some of the articles in the beginner's links. I have some questions the validity of the bank roll building articles, and in particular the micro bankroll. I'm not a serious player, mainly because I don't have the expendable income. I'm feeling that I can spend about $100 a month on poker. However, if I were to be able to build up a good size bankroll, then I think I would have more patience to study the game and read more books and read more forum postings.

Now, after that brief description, I just basically want to ask whether the bankroll building articles are still valid anymore. I noticed that they are written a couple months back, and I went and visited bonuswhores.com and it seems some of the bonuses are not valid anymore, especially the party skins, and the monthly reloads.

So does anyone have any good up to date advice on building a bank roll with a minimum deposit of $100?