Keyboard shortcuts boost productivity and save time for power users.
Yet it's sometimes difficult to remember them.
Take advantage of Fitts's law* and place your shortcut keys next to the action button.
In that way, the user doesn't need to remember the action.
*The time to acquire a target is a function of the distance to and size of the target.
Never let users guess what's the next step on your user journey.
Have in mind that conversions might be low because people are afraid to press a button.
A strong message (like "Reserve") adds stress and makes people wonder whether they'll be charged or not.
Upgrade your UI empty states with templates!
Instead of redirecting people to create content from scratch, make their lives easier.
Use pre-made templates to help them experience your product's value quicker and boost your product adoption at the same time.