I cannot overemphasize the need for strictly following all table saw safety rules when working in the shop. Most of the projects on this site require cutting parts on a table saw. Developing safe table saw operating habits will ensure that you can finish and enjoy your projects free from injury.
Of paramount importance when working with any power tool is to wear eye and hearing protection. Also, be sure to read all of the manuals and safety instructions that come with your tools.
Beyond that, this short video on table saw use and safety is a great primer for novice woodworkers. It's also an excellent reminder for seasoned woodworkers who may need to brush up on their shop safety awareness.