Some of the attributes you can learn from your class master are pretty vague. I can only comment on the archer ones, but chime in with others here.
Leather Mastery: Dexterity: There are no numbers here at all and no way to know what level 2 gives you over level 1 etc.
Cloth Mastery: Magic: Also no numbers.
Bow Mastery: The title of this seems to suggest it will increase bow based skills yet, it requires being mounted. Archer’s can’t even ride a mount so why is this one of our skills? Suggest making it a non mounted skill or at least renaming it to being something like “Ranged combat mounted”
Kneeling shot: critical chance: Also no numbers.
All damage and crit attributes: It would help to give an indication of what they are currently. Yes you can just do math, but sometimes it’s nice to get a quick overview.
The critical skills can also be turned off, I can’t think of why anyone would want to decrease their chance of crit. I’m not sure where the best place to explain that would be, but it should be somewhere.
As a seperate issue I think you should be able to learn multiple skills at the same time. It’s already expensive to learn the skills, so why add an additional barrier in the study time? Is the goal to make the player constantly have to come back to Klaipeda so they don’t get to play?