Here are the basics of Gaia Online.
First I am going to teach you about your avitar.
Your avitar can be changed by simply going to your My Gaia you should see an Icon with A white figure click it.When you select your items for your avi you click save to wear it.
Next your profile you go to your profile and click edit my profile to change your background select theme.To post pictures select picture and copy and paste the link.
To get a trading pass you have to select trade wait three days and you purchase your pass for 500 gold.
Thats the basics well there you go.