Added 3 minutes later
While I remember, some notes on armor:
Unlike weapons, there are only three quality levels.
If the absorption is combined (absolute and percentage), the absolute value is considered first.
And some notes on the future OS: there are no specific limitations on different actions in one phase. That is, you can work, level up, and read. You cannot go to two gyms at once. Bestiaries and similar items are not subject to the limit; "large" books are limited by reading time.