The short answer is, if you're new and have no experience of BDSM (and even if you do, it's unlikely to be with random strangers who found you shortly beforehand on a general prossie site), forget it. I've been working and offering varying sub services for a lot of years and I would never allow a punter to use restraints or ties on me unless I could get out of them very easily, and even then I'd want my security within earshot which you're unlikely to manage if you're only doing outcalls
Ir's worth remembering that if you're new you will get every dickhead for miles trying to talk you into doing this sort of stupid shit, because they know you're green and therefore less likely to laugh and hang up than the rest of us. Most of them will be harmless timewasters, but some won't be and you don't want to run into them.