For those asking about the "add a quarter" ruler, it has a lip on it, so when you fold the paper back it snugs into where the seam is and there is no lining up like with a regular ruler. This makes the process go very fast, and if you have pieces cut so you can line up with the 1/4" then it makes it very easy.
I rarely cut pieces now so they line up with the 1/4" I found that to be too wasteful for my liking once I got proficient with the process. when I did the Fire Island Hosta quilt, the waste you'll end up with following the directions is huge. I was pulling fabric from my stash and used about half of what the pattern called for with the piecing.