It is still hot outside so a wool cap may not be the best choice for head wear now. A better choice would be a loom knitted scarf you can learn to loom knit with this loom knitting video made by Lily Oak. This loom knitting video offers you an easy to follow pattern and easy to loom knit head-wear knitting project.
The video takes you from beginning to end with very good video captures of the knitting being done accompanied with very good verbal instructions. You will learn to e-wrap in the flat and use the rib knit stitch in the round along with the brick stitch or figure 8 stitch in working this project.
Watch the video all the way through then start an easy loom knitting project you can use now.