I am planning to take Human growth and development through CLEP. I am new to this program and would like to get any advice possible please. I read something about instacert.com and REA books (dont know what those are or WHERE to get them) being good. If anyone has taken Human Growth and Development through CLEP please inform me as to what you used to study and how I can go about using this. Tips, tricks and advice needed pleaassee! Thanks!