where can i learn how to program an online store..

are there codes online to help me?

If you are not a web developer or programmer, the best thing to do is to buy a packaged piece of software with a built in store template that you can customize.

how much do those go for usually?



also, i was looking around on the internet and found something called 'oscommerce'

have you heard about that before?

Yes it is open source online free e-commerce solution and i hope you will got one from there to fulfil your needs but may be it has some restriction or limited licsecnce!