Finishing question

I’m getting close to needing to do my first set-in sleeves on a sweater. I know mattress stitch works great for straight seams, but what about seaming the sleeve into place? What stitch should I use?

This should help
http://dawnprickett.blogspot.com/2006/02/making-beautiful-seams-tutorial.html
http://www.anniemodesitt.com/seams_sr.html

Yep- those do help- thanks!!!