Make sure you use the store to buy spells that will change the creature weakness or a tile for example. There are multiple pages of spells.
For now there is no highlight when you hover over the page selector at the top of the page. Click on the regions indicated by the red circles in the screenshot below.
When you hit the “play” button on the first screen it can take a while to do some initial loading depending on your system. We plan to put up a loading notification.