I can't find a way to check what my heroes capacities are actually doing. Some of them are self explanatory, but others are not. Heroes attributes can on the other hand be easily checked by pointing them with your cursor - i think thats the way of fixing it. The same applies to units capacities. Thanks.

Currently, if you wanna know what Hero/Unit capacities do, you have to check the Bestiary that comes with the game. It's hiding out in your Steam folder, and it's also available here on the forums, just in the Tips & Tricks section. This is one of the issues that they're definitely going to improve on though (ie. tooltips when mousing over capacities, etc.), as mentioned in the community feedback thread.