If you search for cricket laws, you will find many websites that have the information, but the correct site to visit is the MCC site on the laws of cricket. The website contains the latest updates to the laws and will be more up-to-date than other sites.

On the subject of resources, a great site to keep track while England matches are going on is the excellent Guardian site which has over-by-over (OBO, as they call it) of the matches, as opposed to the ball-by-ball coverage at Cricinfo. Be warned, both sites sometimes run into technical snags not infrequently.