I understand that many people might know this but at the same time I am sure it will help someone. For awhile when i was near someone that i wanted to check or a crystal i wanted to start a quest at i would click the notification at the top of the screen then click the notification on the right then go on with my business, took some time but hey the interface is buggy :P
I thought for people who didnt know, you can bring up your menu with the (-) key on the top right of the keyboard and then simply press enter to interact with crystals and what not, using the keyboard does make the interface a lot more easy to deal with.
Like i said i understand that a lot of people know, but sometimes the simple things can help makes things like navigating the menu a little more easy.
If you have any simple tips that might help the new people lay em on this thread, they will probably even help me :P