My cactus!(Gardening)

I just went out and bought two San Pedro cactuses, and will be planting them soon. I am fully able to search the net and get info on how to grow them, but is there anyone here experienced in growing cactus and succulents(especially Echinopsis pachanoi, syn. Trichocereus pachanoi, Trichocereus peruvianus), that could give me some cultivation tricks or give me pointers if I need them?