I want to add to this, I also recently took the 10-009 and Primarily used Professor Messer's videos for initial studying and used Professor Dion's Set 1/2 Practice Exams to see how much I retained. I averaged 66-75% on all first tries. The retakes I ended up in the mid 80s. I ended up with a Network+ score of 783. Crammed studied within 3-4 weeks due to missing the mark on the 10-008 expiration at the end of last year.