When I got in I had to take the APFT in my recruiter's office, he made me do pushups and situps in his office and for run he just asked me what was my normal run time for a mile. I guess its changed now, drink lots of water and do as many pushups as you can in a day.
My recruiter gave me some websites to prepare for ASVAB, you can just google it there are number of practice test online. I think go army.com has some practice tests too..Good luck!!!