The pattern is fairly simple - a snowball block alternating with a pieced block. The pieced block has four 4-patches, one plain square, and four Triangle-in-Square(TIS) units. The TIS is the only tricky unit; to make it easier you could use the Deb Tucker V-block trimmer (my first choice) or the Tri-Recs tool (second choice). Since this is not a 45* triangle the "legs" don't extend into the corners of the unit.
Eleanor Burns has a TW in a day booklet I believe. She also has a video on YouTube as others have mentioned.