It makes sense to limit ability to flip pages until someone has read the content but omg it was too long a duration - I would finish reading, read a second time, and the counter still wouldn’t be done. This caused me to open other browsers and to two things at once Waiting for the counter to be done to flip to next lesson. To limit someone finding other distractions suggest the counter be reviewed and decreased or allow the user to specify their reading speed. it was exceptionally frustrating. Where video learning was an option I selected that, but through the last few modules (particularly 5-7), the background music became very electronic and distracting. Family members overheard it playing through the entire course and commented on what a marked shift in style it was from beginning to end. Just super distracting to what were otherwise good modules. There was a question asked in the quiz for module 3 where the content isn’t touched on until module 4 (diver flag/buoy). Otherwise great course and I felt comfortable going into the test.