Another late tutorial - sorry! I thought this technique might be better shown with a video, but my efforts yesterday to record one didn't work out so well. I'm here today (with photos) to show ya how to kfb.
Knitting into the front and back of a stitch (or kfb) is my favorite increase. It's easy, it doesn't leave a little hole, and I like the decorative look. This is how it's done.
Step One: Knit the stitch as normal, but do not drop it off the needle.
I tried to get a photo of the bump left by a kfb increase, but the yarn was just too dark and there wasn't enough sun. If you look at the raglan section of St. James, however, you can see what a pair of kfb increases looks like.