Say someone from around the world wants to by my widget with bitGLD.  I'm willing to accept bitGLD.  If my account has the name "myaccount" how do I know when the customer pays? 

With bitcoin, I would just give the customer their own address.  What should I do with bitshares?  Should I have them pay sale1.myaccount?  Would I need to register the sub account. 

Some non layman terms would be nice as well. 

Thanks for your input.  I haven't found a full fee schedule yet.  For example I just learned about the 5% margin call fee.  5% of collateral, or 5% of the asset shorted?  Who get's that fee?

How are new bitshares created and under what rules?  How did the existing bitshares come to be?

I've been into bitcoin for a while now, so it is a bit strange to post in the newbie forum.  However, I am new to bitshares. I'm here to learn.  Please direct me to information about the assets that are traded with bitshares.  Is there a fee schedule somewhere.  (For example i think it was 0.5 BTS to register an account.)  What are the best bitshare and bitasset exchanges?