Do not buy a Bible that you are unwilling to mark and use. An interleaved Bible gives more room for notes.
Be precise and concise: for example, Neh. 13, 18: "A warning from history."
Never mark anything because you saw it in some one else's Bible. If it does not come home to you, if you not understand it, do not put it down.
Never pass a nugget by without trying to grasp it. Then mark it down.