Nohm Error about backbonetutorials

Hey not sure if you still want an answer to this but thought I'd leave a comment anyway.
The 'Nohm Error' you're getting is actually just a warning, to resolve it you just need to wait until the redis client is connected before setting the client. This can be done by replacing 'nohm.setClient(redis);' with this:
redis.on("connect", function() {
nohm.setClient(redis);
//Anything you do afterwards that relies on the nohm client
});
This means that the client won't get set until after the redis client is connected.

As for your actual redis connection error, the issue there is that you're probably not actually running an instance of the redis server on your machine, or it's on a different port other than the default 6379. Make sure you have redis installed and a server running before running your server.js file.

Hope this helps. :)