Hermosa will increase the maximum number of points you can invest into a particular skill, but won't actually give you those points: that's still for you to do from either levelling up or finding skill books.
The health/magic not increasing in the Battle Tower is deliberate and is to stop people teleporting back and forth in the middle of a fight; similarly, you can't consume healing potions or cast spells there either.
The fight at the mine tower is known to be very tough: come back later! I recall attempting it even earlier in the game (it was accessible from much lower levels in the early version of Ego Draconis) and it was frustrating, to put it very mildly. Without giving anything away, there's more you may wish to do there where being at a very much higher level would be beneficial. It can be left pretty much as long as you like, the cut-off point being when you enter the Hall of Echoes.
Edit: your English is fine, though I'm not so sure about mine and I am English. I'm still half asleep so hopefully my rambling explanation makes sense...
Last edited by vometia; 23/01/20 03:54 AM.