There is no official trial but you can see if you like this kind of learning by checking our free lessons.
Covcell Pro is an extension of the Covcell Free Prep. We publish 150+ free video lessons and 120 practice tests. You can check them here: https://covcell.com/ged-online-classes/. No need to register. You can access all lessons in 4 GED subjects.

Decrypting the GED includes 360+ lessons for GED Prep, 120 videos with GED Test-Taking Strategies, progress tracking and many more cool features.