The first thing is Julie Herman of Jaybird quilts has developed a very useful tool, the Super SideKick ruler, and I really recommend it for this quilt. I'm an experienced quilter and I found this tool very valuable. She has other great tools that I haven't used because I normally don't follow patterns.
Two: I wouldn't recommend the Stereo pattern for beginning quilters. I think beginners would quickly become frustrated. For example, the pattern suggests laying out the triangle and half triangle units, then sewing the rows together. That would work for an experienced quilter but a beginner would be lost because all those 45-degree angles just don't go together easily. You need to join two adjacent units, like above, then join them all together! It's an easy step that I thought I'd share, in case you're a beginner and want to make this quilt
This is my progress, as of yesterday:
I took the second photo to include the fun Christmas tree I got this year. No needles and no lights!
May your bobbins always be full,