I agree with Finding_Fantasy.

I prefer giving only a single rule, or a small number of very simple rules at any one time. Once those are mastered by the submissive I'm willing to gradually add more rules.

The reasoning behind this is that if you give a comprehensive list of rules you expect obeyed she is going to have a difficult time remembering/obeying them all. And you're going to have a difficult time remembering and correcting her errors. This will lead to uneven and haphazzard enforcement of your rules... you may lose her respect since you're not consistent in your enforcement. she wont be happy and you won't be happy.

As for what rules to give, consider the reason we use rules in the first place. Rules are meant to change, shape, and guide behavior.

So for her first rule, decide what you'd like to change or accomplish. Perhaps you enjoy being called "sir", or you always want the seat on the toilet left up. Pick some behavior you want and give her a rule to enforce that behavior.

I also suggest you write the rule down where you can both consult it. That way the rule is clearly spelled out and both of you can refer back to it. You'll be surprised at how quickly your list will grow.

Finally consider how you're going to enforce the rule. I personally use a graduated scale, initially when I'm training on a new rule/task I correct her verbally, then if she continues to have problems I use physical correction, such as the paddle or the strap. More severe punishments would be forced to sleep on the floor at the foot of the bed, or even in another room. The ultimate punishment for a submissive would be release from the relationship. Every submissive is different in what works best for them. You can customize the enforcement for each new rule, or you can pick one set of responses and use them across the board on everything.