David Page Coffin's book on Shirtmaking changed my whole game when it came to sewing men's shirts. Before it, I was a paint-by-numbers shirtmaker--blindly following pattern directions, dissatisfied with the results but not knowing how to improve them. After finding Shirtmaking, I realized that the pattern instructions were in fact not the best... for instance, I still don't know why continuous lap sleeve plackets are so popular in commercial patterns--I think they're difficult to do well, and look like crap when done less-than-well. Coffin's extremely clear instructions gave me the confidence to make my own changes to printed patterns, and better sleeve plackets were just the beginning. I also improved my collar skills, changed a stand collar to a band, tried (and successfully pulled off!) a hidden button front placket, and finally mastered flat-felled seams (now my very favorite seam finish).
Well, Coffin has done it again. Making Trousers is loaded with ideas for variations on pockets, better ways to make and reinforce waistbands, fly construction, fabric selection, working order... it's amazing.
What it's NOT, however, is a beginner's book. The book starts with an examination of several pairs of pants, from RTW jeans to couture women's trousers, and the language he uses to describe them assumes that you know your way around. For instance, the fly front: Coffin debates the merits of cut-on versus separate fly shields and extensions, discusses bulk reduction, and doesn't overlook the effect of straight-grain vs. bias. There are two step-by-step demos of two different methods of inserting a fly zipper, then a comparison of the subtle differences between the techniques, tips on reducing bulk, topstitching, and binding... and THEN a demo for making a button fly. Be forewarned: if you haven't made at least one pair of trousers (and I do mean trousers--pull-on pants don't count), this book may be over your head.**
The other thing it's not is a fitting book. The front matter sets this straight--Coffin suggests drafting your own or having a patternmaker do it. If you have a pattern that fits you already, you're good to go (and if you don't, Burda is probably the best place to start). Pants for Real People, while probably about as far away from Coffin as you can get in terms of writing style and layout, is a decent resource for fitting.
The included DVD is a real bonus. I'm not a big fan of instructional DVDs for sewing (it's usually hard to tell what's going on, because people's hands get in the way of seeing what's going on with the sewing), but this DVD contains loads of illustrations and examples that couldn't be included in the book without doubling its size and cost. There are patterns for several pocket variations, sewing and finishing tips, and lots and lots of construction closeups of both handmade and RTW clothing. The DVD contains PDFs which have both photos and QuickTime videos. I had no problem viewing them.
I'm looking forward to trying out some of the waistband techniques right away. If you're interested in improving your trouser construction skills, I feel sure you'll benefit from this book.
** Third paragraph edited to correct a ridiculous misstatement on my part :-)