Kayanna- dont worry...all the different info about hair can be intimidating to people just starting out...plus its hard to shake those bad hair practices that have been ingraved in our heads. Such as pink oil, blue majic hair grease and no washing.
I am not trying to be a product pusher or anything but I think you should look into the cathy howse hair growth system....its kind of a no brainer. The system is a manual, deep condishioner, and daily moisturizer. The hair basics are in the book and how to grow your hair with easy step by step instructions and DOs and DONTs of hair care.
The first time using her products I got 6+inches in a years time. Although it is about $80 or so to buy the system, it works and lasted me a WHOLE YEAR! It probably saves you money because you would have all u needed and wouldnt have to go out buying products that may or may not work on your hair.
I would really suggest trying this first...at least to get your hair healthy and add some length then you can play around with other products if you wanted to. here is the link....
www.ubhpublications.com