You first need to see exactly how the main core power training movements are performed. Then you need an experienced person to check your form after you have been practicing and getting into condition. That is the first step. There are hundreds of books - thousands on exercise- and millions of websites. Very few if any deal with the basic fundamentals however. I would suggest you just start casually looking into starting squats and dead lifts without weight or with a dowel or just a bare bar with wooden training plates (like I have at my facility here) to get the hang of the proper form for the first few weeks at least. Once you actually get to that point you will be "in it" enough to go to the next step.
I actually shop at the Brooklyn Terminal Market since it is closer to me than New Generation out in Greenpoint. The problem I have with Brooklyn Terminal Market is that there is a limited number of brands to choose from (Belleza, Bonita and some other obscure company), and I've found that many of the wholesalers there do not discount anything for me. It's quite frustrating. I have had more luck at New Generations.
I bought a box of bananas two weeks ago from BTM and I couldn't finish them. They were all gassed, and didn't ripen well. They stayed mostly half green and half spotty. These bananas were from the Belleza brand.
It was a lesson because I realize that my taste buds have changed considerably since following 811...and I really cannot just eat crap all the time. I'll have to try and stick with organic as much as possible, but that's not to say that it's impossible to come across crap in that range either. It would be cheaper to buy organic bananas from NG rather than Whole Foods or Trader Joes ($30 vs $20 I believe). The last time I bought for organic bananas I only paid $20 at NG, and interestingly the price is the same for conventional ones at BTM.
I'll still continue to buy only conventional Bonita from BTM from time to time though, as I do not have a mountain of $$$ and do need to budget much.
Let me know if you need any other info! I'll be happy to help out!! :)