Don't study ahead. Show up with a strong willingness to learn. Ask a lot of questions. The amount of material given can be overwhelming, so take one day at a time. Don't leave the class with a lot of questions. Always clarify. If it starts getting overwhelming, immediately ask for help. Ground school is usually easy if you are prepared and are studying. Get plenty of rest...For the sim, brush up on your basic instrument skills. Try to fly a desktop sim if you are behind instrument procedures. Limitations, memory items, profiles! Good luck!!