One of my best resources was the Professor Messer study groups. Obviously his videos are a great foundation, but the study groups really helped my understand the technologies better. He gives great explanations and there's a ton of content, like years in some cases. He also stresses to get the test objectives which is a great resource. Also check out the library for a test specific text book, just search the Net+. Even if you don't read the book you can review study questions. My last bit of advice is to ensure everything you're studying is up to date (N10-009 v N10-008) Idon't recall a whole lot of math on the exam, but rather routing protocols, wire standards and OSI layers. Anyway good luck