I'm just chiming in to thank you for the warning about Roger. As a former English major, I HATE grammatical errors. If a major company lacks the time or resources to properly edit their documents before publishing them, it makes me question the accuracy of their content as well.
I'm currently using Gleim and have noticed one or two small errors and awkward word choices, but I haven't seen anything egregious.
"Surround yourself with assets, not liabilities."