Go to a Home Depot or Lowe's and get a good potting mix/soil if you are pressed for time. You are more than welcome!!
Most of us learn by trial and error...lol
Use some peat moss, compost and perlite or vermiculite. There are plenty of soil making threads on here :)
http://thehotpepper.com/topic/10245-all-about-soil-a-great-resource-i-thought-i-would-share/
Start here...
Nute lockout might just now be catching up with you. Clay is VERY dense and roots cannot move in it. Water and nute uptake is near impossible in too much clay, as is getting oxygen to the roots. Growing in ground and in pots are two different animals...