???help???

i've used the aneros a few times now and, the most i have had at of it, is a gentle sensation, which lasted for about ten seconds, nothing has happened since and need help, the online instructions are to simplistic and need help to see if im inserting it correctly, how much lube do i use etc.
p.s. after i get annoyed using this, i tend to jerk off, and must admit there is much more there, then if using nothing at all, if u know wat i mean