Appleseed is a Basic Rifle Marksmanship program that teaches AWESOME fundamentals for shooting from standing, kneeling/sitting and prone. The technicques will give you a strong shooting foundation for any other use of the rifle,
period.
Many will say the method is outdated and not "tactical" enough, but you must run before you walk.
Whatever rifle you have is what you bring, but the program is geared toward teaching you to use the iron sights on your rifle to hit targets out to 400 meters. I would receommend you visit the appleseed website and read the thread(s) about going to your first appleseed.
http://www.appleseedinfo.org/smf
Bring plenty of ammo, water and a humble learning spirit and you will benefit from your investment of time and money. Also, bring something to lay on like an old piece of carpet or a shooting mat (if you have one). ELBOW PADS are really a good idea. I bought a cheap set of volleyball knee pads and used them for my elbows and they worked great. TRUST ME ...ELBOW PADS ARE A MUST!
One day is better than none, go. I promise, you'll change whatever plans you have in order to attend day 2 once day one is finished.
Other than that, have fun and make sure once you have the Appleseed in you, you plant it with someone else.