Just enter your email address in the box and follow the instructions.
The second way to subscribe is via RSS. This is basically a way of having a program check this website for updates. You run a RSS Reader and tell it to monitor the RSS Feed for this site and it will check every minute, 10 minutes, hour etc. It saves you having to come back to this site every day to check for updates. If there is an update the RSS Reader will tell you.
This is the RSS Feed for this site.