Character transfer

Is there an option to transfer one of my characters on my account to another account so I can play both my characters at the same time?

Only using Character Trade and buying your own character on your other account.

Is there a guide on how to do that I'm new to warmane

Like if I put it up cheap to buy it myself is there a risk that someone else can just buy it anyway? Do I have to approve the sale?

I don't think there is one for that. You need to be a donor on both accounts if I recall correctly. You access Character Trading from the My Account menu, Trade tab. On there you can trade either items or characters with other players, and is where you'd have to set your character up and buy with coins using your other account. It's not a smooth method, more of a work around, since direct character transferring isn't supported to avoid people selling them for real money, scams, etc.