If you aren't going to have the opportunity/time to attend any RSP sessions before you ship (like me), I've read that you should learn these on your own:
1) Soldier's Creed
2) General Orders
3) Army Values
4) Army Song
Just a heads up for anyone who's in the same boat as me.
Army song isnt hugely important.. you will know the soldiers creed from saying it so much during reception, and the general orders are good to know,but you will have ample time to get those down in reception. the army values will be drilled into you during red phase.. So, if you dont know them before you get there, dont worry, you will learn them very quickly. Also, you might want to print off a copy of the infantrymans creed if you are 11B, that one is tougher to learn than all of the rest combined