Some knitters slip the first stitch of every row out of habit. This gives you a nice chain edging. Brioche stitch slips the first stitch and it looks fabulous on both sides. Brioche is good for reversible scarves and cotton dish/wash cloths. When they get wet, they're nice and cushy.
I try to avoid seaming as much as possible. I'm lazy and mine never looks good. I do mittens, hats, and sleeves in the round. This is especially important to knit seamless in baby garments where the baby might have to lie on a seam, like newborn or preemie hats.