The old timer at the lumber yard in Tulsa taught me to read grain direction in 10 seconds
I was picking through a stack of 2x4s at a yard in Tulsa last Friday when this older guy named Ray walked up and asked what I was building. I told him a small workbench and he just nodded, then flipped one of my boards end over end and said "you're fighting the grain on half of these." He showed me how to look at the end grain like a stack of tiny arches, said the arches should point up on a tabletop so a hand plane won't tear out. Took him maybe 10 seconds per board and he sorted my whole cart while I stood there feeling dumb. I've been buying lumber for 6 years and nobody ever explained it that plain. Went home and checked my last project, sure enough 3 boards were backwards. Anyone else learn something basic way later than they should have?