Blog post from Closet Case Files with lots of pants alterations for various fit issues
Narrowing pant legs - - - even if you don't want them to be "skinny".
Sewing tips, patterns etc
unstitch the waistband at center back
Tutorial: How to Take In Pants
Probably one of the best illustrations on pants alterations I have ever seen. Cation Designs: Pants Pattern Alterations
How to take in a pair of pants at the waist. For the McFrugals like me who manage to lose weight and don't want to spend money
Art or craft?
A Fashionable Stitch + Trouser Sewing and Alterations – Sew, What's New?
lots of great tips for adjusting the crotch to fix pants-fitting issues
Altering pants that are baggy, too loose, or too tight
We Can Make Anything: how-to // alter pants (straight leg edition)