Questions about skills

I've had some questions about skills for a while now that I'm hoping someone can answer.

Let me begin with this: I bought Guild Wars used on eBay, and the account it came with had 3 level 20 characters - a W/N, a Mo/W, and a E/R. I started a new R/Me to play the game from the beginning.

My goal, though, is to have three characters with the six professions spread between them. I also want a W/Mo, so to get this, I would keep the R/Me, change the W/N to a W/Mo, and change the E/R to an E/N. I would delete the Mo/W to make room for a PvP character.

I also want to have every skill available to those three characters.

Now before I go changing and deleting, I have some questions:

1. Are there any non-elite skills that are gotten only through quests/other means, and cannot be gotten from a Skill Trainer?

2. Quests only give you skills based on your profession. So, lets start with the W/N. Lets say that I've done many quests that would have given me Monk skills if I were a Monk. If I change my secondary later on to a Monk, will I be able to use these skills?

Those are the only two for now... if I think of any more, I'll post them.

Thank you!!

could you tell us how far these chars in game are ? cause at a certain point ure allowed to change ure second proffesion unlocked= unlocked so u wont loose that but u'll have to work on getting skill points

1. Not that i recall imediatelly but i'd advise getting em with quests instead of waisting skill points

I've done the Dunes of Despair, which is where you can change the second profession, right?

Basically my first question's importance is related to the answer of the second one. It's only if I've missed the quest skills that I'll need to buy them.