not much you can provide a young future soldier except to pat him on the back, say keep your head srewed on stright and best of luck see you in 9 weeks. Buy him a graduation present....a digitial camera, but then again maybe not..since lost of military people have gotten in trouble using a digitial camera....Good luck to your cousin
ps: here is his basic schedule, let your cousin check this link out
http://www.goarmy.com/life/basic/index.jsp?hmref=qu