I read c# spec when it was in beta, going fast through it, skimming less informative parts, taking quick notes as bullet points in form of single statement or question. It was one of the best experiences, it put me in flow mode and I learned a lot in very short time. I used c# later professionally and never had problems. Great thing about language specs is that is very precise, without mistakes. The art is to read+skim+note it quite fast.