With the big October release, we disabled the tutorial material temporarily due a technical detail we need to resolve. This was briefly explained in the release notes for build 201, but it's probably not clarified anywhere for new users. We'll be adding that back in once we get the few remaining important bugs sorted out. Sorry about that.
In the meantime, I recommend taking a look at the various tutorial videos and the introductory seminar video from GenCon 2015. Those will provide a lot of examples and helpful guidance to get you started. Beyond that, don't be shy about asking questions here on the forums, as there are lots of very helpful folks here with a lot of insights about Realm Works.