Hi, getting a gateway is like getting a can of petrol but no car. And vice versa. Devices are where the action is at. The TTIG doesn’t have a display or anything to look at - just the web console which will get old very quickly. Whereas having a device send data that is relayed to your phone for instance is much more satisfying.
Depending on where you are you may have gateways in range, but overall you need a gateway and a device to play with.
I’ve got to cook supper, so here’s an older post that still stands: