Square in Square, a tutorial
I get asked for this pattern quite a lot. It's not a difficult quilt to make - it's a randomized log cabin in 2 colors with an optional splash of a 3rd fabric (print) in small amounts as an accent.
The instructions are quite straightforward; however, if you want more detail, there are a number of instructions online for the "courthouse steps" method of sewing log cabin quilts. Just google that if you need it.
Cheers and enjoy! Here's a link to download the PDF instructions.