Completely understandible if English is not your first language, but please, in game, speak in English, not whatever your native tongue might be.
To answer your questions:
1.) You can only train in sword skill through a trainer (teacher), there are a few of them around, just select them and type /train. If they can train, then a window will pop up. I am not going to tell you who trains in sword, you will have to figure that one out for yourself. Also, read the player guide which is accessable through the main site.
2.) If you mean the mines for mining gold, there are a couple around, in different places depending on for gold, coal, iron and platinum. Search around in game, or if you ask someone nicely they might show you.
3.) Your character stuck in a wall... type /unstick and he will appear at some point close to the wall. If this doesn\'t work, use /spawn and you will respawn at Hydlaa. Don\'t do the second one unless the first one doesn\'t work, please...The devs and gms don\'t like it.
4.) Again, only you can answer that...
5.) No such thing as cash, only tria which is the currency in the game. Gobbles sometimes drop a couple tria if you kill them, but mostly you sell loot from monsters to the merchant NPCs
6.) Nope, sorry. You\'ll have to make a new character.
Hope this helps you, please read the player guide, most of this information can be found there, along with much more.
Have fun,
Xirius