I used EMT Tutor and EMT Academy. Both are similar apps while the first one is $3.99 and the second one cost me $1.99 when I bought it ($4.99 now). Both have practice quizzes and flashcards while the EMT Tutor has scenarios. Either app is ok, but it is the same material from class just in a more portable form. So unless you plan to do some studying away from home and on the go I would suggest just reviewing your notes, and quizzes from class. As for paper material I bought Informed EMS Field Guide (Amazon is cheaper). It is a nice little notebook that gives a lot of practical information in a handy spiral bound water proof notebook. It contains most of the information you learn in class in a quick, organized, and easy to read manner.