Using XCEL Solutions in Florida. Any alternatives for study?

I’m only half way through this course & I’m struggling so much. I have ADD as is so struggle with attention & retaining information but XCEL Solutions is BRUTAL! The company that hired me had me sign up through them but there’s so many grammar error & I feel like there’s contradicting statements I’ll run into. (Example: I just read something that said Contributory Group Insurance requires at least 75% of employees to participate then the next page said Contributory Group Insurance has no minimum number employees that must participate. Ex #2: I ran into a multiple choice question… the correct answer was “All must participate” then when it corrected me the definition said “Most must participate”) I’m going to finish it so I can absorb what I can with it but is there any other materials I can find that will help me, specifically videos? I keep getting between 70%-80% on the quizzes & already stressed about it. I’m just extremely frustrated as is battling with staying focused & retaining information so it doesn’t help that I find XCEL to be confusing & trash.

Edit: I just read my first example & I realize I just misinterpreted it. I understand what it means now LOL (I haven’t done school like work in 8 years bc I struggle) Some of me feels like I need a special ed version of this