This Spring Hat looks involved but is really quite easy, the stitches worked are tr/U.S. dc and a Forward Post Treble/ U.S Double Crochet which is explained in the pattern. Bendigo 4 ply cotton was used however any good quality 4 ply cotton would be appropriate.
Gauge is not important as the pattern is written to accommodate any discrepancy with tension. This pattern used Bendigo/Heirloom cotton You will need 50 - 100 grams of cotton depending on the size of the hat you decide to make. Extra from your stash will be needed for the flowers and leaves. Bendigo colours used are: Hat Parchment, flowers, Blush, Daffodil, Hyacinth, Wild Lavender and Peach, Leaves are in Honeydew.
There are video tutorials attached to the front page of the pattern. Just click on the stitch required to view. This can only be done whilst the pattern remains online.