You can create a bookable event by logging into your account and then visiting your event type dashboard. This is actually the page that you land on after logging in. You'll notice that in the upper right-hand corner of this page, there's a button marked [+new]. Pressing on this button will cause a pop-up window to open.
This window will have fields like event name that you can fill out. Once you've filled out those fields, there's another button at the bottom of the pop-up marked "continue." Pressing on this button saves the information that you just put in and creates the new event type.
Once this has been done, you'll be redirected to the management dashboard for your new event. Remember to click the save button in the upper right-hand corner of the screen once you've finished entering all the event info.