Well don't get discouraged the are a lot of nice players out there. Unfortunately there is just as many rude and bad players too.

To trade with someone in town you find the person standing near you and click on their figure. Then a window will POP up you will see 2 boxes in the top left one looks like a box with the top open that is to give someone a item. The one with the up and down arrow is for trading. The only way to see the stats of someone's gear if for them to display it in the trade window for you.

To give or trade someone in a dungeon you click on their nameplate (the thing that's shows their name, health &mana)in the top lift of the screen not by clicking their figure.