Bought a map for Bear School gear from a merchant, but it doesn't start the quest when I read it
Does it only trigger the quest if its the First Map for said school?
I bought the first map for that and it didn't trigger either. It might be because I've never been to Skellige yet which is where it seems like the quest is set. Or a bug.
That is normal, I had the same issue. It will pop up once you get to Skellige. If it doesn't, read the map again.
What was more annoying for me was the quest naming in the Polish version. Bear and Griffin treasure hunts were named like this:
Armor quest
Upgrade 1
Upgrade 2
Upgrade 3
So 4 sets in total, while the cat quests were named
Armor quest
Upgrade 2
Upgrade 3
Upgrade 4
Also 4 sets in total. It almost made me tear my hair out, I checked all the blacksmiths in Velen, Novigrad and Skellige 3 or 4 times for maps before I realised it was a naming error.
Pity that the Bear armor reduces energy regen, it's by far the best looking one. Cat and Griffin get worse with every upgrade. I rolled with the Bear armor as soon as I unlocked it for the looks alone. I had to adapt my playstyle to the slower regen (was using the Cat set earlier)
And I'm still mad I can't craft the sword for the Bear set, because it requires the alchemy ingredient Nigredo for whatever dumb reason, and I still don't have the recipe despite finishing the main storyline. I'm running in the fully upgraded Bear armor and the fully upgraded Cat swords.
Also, upgraded Quen + swordsmanship build is awesome. That last talent that allows you to cast a max level Sign with 3 adrenaline points + entire energy bar is godlike. Also the ability that let's you cast Signs with adrenaline points is a game changer.