Liz - yes, we follow Mosaic Law as such, we call it Torah Law, of which there are 613 in the bible. On top of that there are also Rabbinic Laws, which are explained in the Oral Law (not sure how many exta there are).

You can't have one without the other, you must keep both Torah and Rabbinic laws. But for example, one of the 613 is "keep the sabbath" but if you look in the oral law (now written down), there are pages and pages of discussions about what this means, and various other laws. For examples, there are 49 categories of 'work' i can't do on the sabbath, but within those 49 there are lots and lots of things that you don't do - so it ends up being a lot more than just the 613.

Does that make sense? Its a bit confusing i guess at first.