bedrok, something else to take into consideration. unless you are buying "studs" your 2"by6" 10' will actual be any where from 3/8" to 5/8" longer. they leave this on lumber so you can square up the ends. like i said, the exception here is "studs" and they are cut to length for ya. ok, presuming you are going to do it right and have a double top plate, you need to take off 1 and 1/2" for each plate. 2 top plates and the sill plate = 4 and 1/2". in other words, you want your framed wall 10', or 120", square off one end and measure out 115 and 1/2", this, when put together will give ya a 120" wall. as has been said, after your first stud, burn 3/4" for all of the rest of the studs. if ya don't understand this, measure out 4', ya want it to be centered, so you would mark it 3/4" back for your stud. when laying out a building, ya want to start on the same side every time. in other words, say your building sets north to south, your framing the west and east walls, start laying out from the south or north but, do it the same way for both walls. also, the walls that your rafters/trusses set on are your outside walls, frame them out and set them first, this way your rafters/trusses will set over your studs.
i hope all of this makes since, it ought to get ya started, if ya need help let me know, little d.