I started mine, its been okay. Going to my unit is better, you don't get yelled at but all well.
Keep your eyes and ears open and pay attention in class. Bring a pen and paper! And a felt pen! Very important.
Drill isn't fun, expect to get yelled at lots.
Fun times.
And remember, don't quit! Its only a weekend every week or two. In a few months it will be over and it will be much better with your unit and other courses you take. They yell because they are suppose to yell not because you are a complete fuck up (well in most cases, haha). Don't talk back and treat everyone with respect. Try your hardest in making your bed, inspection, PT, listening in class etc.