You don't seem at all ignorant, hil, you may be new or shy but you are exploring this sensibly by asking the right questions. The key as others have mentioned is to take it slow, figure out what you like and do not like, and don't be fooled by anyone (particularly self-described "Doms") who rush you into things or try to tell you exactly how you should be acting and what a "real" sub should do. There is no such thing. Just like in vanilla relationships every person and every couple finds a dynamic that works for them. Remember, if it ain't fun, why bother? Play safe.