Ola I recently bought the Mainstream engineering EPA 608 study guide package. It came with 3 different DVDs a 15 page booklet and a 100 plus page book.
From my understanding each section is 25 questions. But I have no idea what to study now. There are practice tests in the back of the book that is totatlly different from other practice tests on the DVD which actually is 165 per section. What the heck should I study now? If I had to learn it all of the hundreds and hundreds of questions I would need 6 months.