I really love anal beads man. So simple, so satisfying. There really is no need to break the bank when it comes to anal beads. Just pick the material you like (these ones are silicone) and run with it. These ones are targeted at first timers because the smallest bead is literally the smallest, cutest thing in the world and it will still feel awesome! Anal beads are all about the entrance to the booty and stimulation of the nerve endings there. You only need to go as far in as you want because your main target is the opening and it is the insertion and removal of each of the beads that feels great. So, if you only want to use the smaller ones just move them slowly in and out to get the stimulation. For those a little braver work up to the bigger ones and feel even more pressure on those nerve endings.
I suggest pulling them out firmly but not too fast (we are stimulating, not plunging) right at the point of orgasm for a seriously mind-blowing orgasm.