I've already stumbled upon a bug/problem, and I started using this mod just about 10min ago.
I made the Information tablet, looked up a recipe and got stuck on that page. there's no "back" buttons or anything. re-creating it / relogging won't help either.

What can I do to fix this?

Im playing FTB Infinity 1.4.1
Minecraft 1.7.10

I solved it.. had to change the GUI scale in the video settings.