Magento

Is there some basic function documentation anywhere? I need to tie magento to a third party system for importing and exporting order information, and automating firing-off of tracking e-mails, etc.

After spending days trying to figure out the basics off how the themes work, which was extremely frustrating and convoluted, largely due to terrible documentation, and now tearing my hair out trying to figure out what some basic functions are called, I’m at my wits end, and ready to switch to another cart.

I mean, maybe I’m missing something here, but I can’t seem to quickly find even a basic list of functions or how this thing is built, with out going through code for hours and hours.

Seriously, how are people who’ve written plugins doing this? I feel like I’ve looked everywhere and found nothing good at all.