I want to say thank you for answering my plea for help Jason and Mike. Your feed back is helpful.
Mike- That site has a lot of good plans and good ideas.
Jason - Well, Native lumber is a local lumber that is cut a at saw mill localy and is, I'm told, less expensiave than, say, Home Depo. The only draw back is a "2x4" is in reality a 1-7/8x4-1/8 or so, and not as reliable for exact measurements. Maby this lumber type is not available in all areas.
I guess my biggest question is for a shed that wont be having to wory about much weight bearing, does the door framing need to be a substancial structure.
In a standard door frame- you have (from the out-side in) a stud, jack stud, and side jamb, and of course the header and eventuial casting, stop and threshold.
So does one need a side jamb? what purpose does this side jamb serve?
Also, it's a few simple shims that you use inbetween the jack stud and the side jamb, right?