Can I suggest an alternate as you work up to this? The Klaziena Shawl is a free, beautiful pattern that looks far more complex than it actually is: https://www.ravelry.com/patterns/library/klaziena-shawl
There are really only three stitches to worry about (chain, single crochet, double crochet), the pattern is extremely clear, and it has both written instructions and a chart. This could give you great practice reading charts as well as with general shawl construction. (I've made it four or five times now!)