Agree with others here. To be more specific though, for a beginner: get in shape; practice being a good boot licker, tops, bottoms, soles, welts; practice sucking, licking, worshipping cock, down to the root, wet and nasty; learn to rim your man's ass; always swallow cum (no spitting out) or take loads in your ass unless otherwise instructed; be verbal, if your top wishes, take his cues what that sounds like; expect to be verbally degraded, slapped, spanked, tits worked hard; clean out before a session unless raunch is desired; assume you will drink at least beer piss; be able to take a hard fuck; listen whether your top likes his nips, ass or other body parts played with; call your dom sir or boss, as he demands; be prepared to light your top's cigars or cigarettes if instructed; more generally, listen to instructions given by your top as scene begins, and follow them. These are a few examples of what I expect as a bare minimum from a beginner sub. The key point is that you must focus on giving pleasure to your man, not what you want him to do to you. Generally I prefer older muscled subs who are much more experienced and into receiving pain and edge play, and getting very dark, with no safe words. Although I have a weakness for hot college age bottoms looking for their first...raw cock, smoke, snort, slam, poz load, blood slam, whipping....