The Easy Argyle Hat (Mulligan, musta got lost) is a great project on which to learn stranded knitting. We have 1 minute (I swear, 1 minute) videos showing out technique for color work using two yarns at one time. https://www.stonyhillfiberarts.com/KnittingVideos.html

Size: Small, Medium, Large (20, 22, 24 inches
around; 8-9.5 inches deep)
Yarn: DK or Light Worsted, 100 gr– approx. 200 yd;
2 colors: 50 gr, 100 yd of each (Southern Bales)
Gauge: 5 stitches per inch in stockinette stitch
6.5 stitches & 6.75 rows per inch in argyle pattern
Needles: size 4 or 5, 16 inch circular & double
points for crown decreases
Know How: determined intermediate; stranded
knitting knowledge and/or willingness to learn it
is helpful. There are many videos online to help
you with this technique.