Question: A friend of mine is saying I should only get as much lumber as I can use in a day or two as if it sits for too long it will dry out and warp pretty quickly...is this good advice?
I only bought the lumber I could use at a time. But not for the reason of it drying out and twisting. It happened a couple of times but not often, mostly if I had an extra stud or two that I didn't use right way and then let it sit there for a LOOONG time. What I found out is that the length of time it was going to take me to finish was the REAL driver behind that. I didn't have the room to have a big pile of lumber sitting around getting in the way. And I did the HD pick it out thing. So I would go on a Wednesday or Thursday evening (when they put out the new, fresh piles for the weekend warriors) and pick through to get the 20-30 I knew I could use up over the weekend. They were easier to load and carry down to the basement, too.
I often found that two or three layers down I would hit a "sweet spot" and get 10-12 right in a row all perfectly straight. Sometimes, I had to dig deeper, but there is almost always a sweet spot somewhere in that pile.
Also I found it cost effective to spend the extra 20-50 cents on the premium lumber to get more straight (and drier, therefore lighter) amd less knoted studs at a time. And my ceiling was low enogh that I could get the shorter studs, so that saved a few bucks, too.