i'll answer your "qetion" there are many ways you can proceed to trades since your new.
try www.playerauction.com great place 100 percent secure has like a 5% rate or something but worth it
also try doing in increments never give all at once maybe try 10 percent at a time. or 20 percent and verify the payment. if you get scammed that way atleast they cant get all the gold. also you will be able to use evidence against them and get them banned . take pictures of the transaction msn conversation etc. even the runescape trade! you need the runescape trade. just to prevent this i highly reccomend using www.playerauction.com paypal is not safe and people do chargebacks alot! take care enjoy sythe