RESEARCH....is the number one thing you must do. Read the sticky's in the cichla forum, Once you think you understand them, research even more.
Once you grow them out pass the 6''-8'' mark, they will be alot easier to keep. Most pbass will grow to at lease 24''+ (assuming), so plan big. Tems, pinima's and the other large cichla will grow to 30''+(assuming).
Care for smaller pbass (6''-ish and below) can be kinda tricky. High temps of 85-89 is optimal for baby bass (reduces the chances of Ich and other diseases). Plenty of aeration is also needed to for the high temps on the tank.
Feeding is the most tricky part of keeping bass at a small age. Blood worms is the best to start the (Sometimes long) process of converting to other foods IE, pellets, shrimp, siversides and so on. Pbass at a small age (1''-6'') have a higher metabolism of the older pbass (8''+), so feeding three times a day will be best in till the 6-8'' mark is reached.(IMO) Feeders work rather good as well (feeder guppies and Rosies work will for younger pbass). But larger gold fish works good for them older Pbasses. (QT all feeders first... IMO)
Tank size, bigger the better. I would say 180gal would be a minimum for juvies/adults pbass (2-5)x(Mono, Ocells, Kelberi's, Orino's, Azuls). But, Tem's, pinima's..No less then 4' wide. I like to use a 75gal grow out tank that usually last for 6-ish months. For me, it's easier to convert when a group of (lets say 10x2'') pbass have to compete for food. Compared to keep 10x2'' pbass in a 300gal and not finding food when feeding time comes. (Like I said, It's easier for me).
By all means, use common sense. When the tank is to small for your bass, upgrade 2 months before hand. When your water is dirty, clean it.
I think that's it.