You first need to speak to one of the two tutors standing near the South (main) entrance to the Grand Exchange. One is dressed in wild orange and such; the other in light blue. (They both look ridiculous. :))
Next, go to the center of the Grand Exchange and speak to the people behind the desk wearing dark blue. (The people wearing grey are bankers.)
Tell them you would like to access the Grand Exchange.
From there, it's rather self-explanitory. Choose buy or sell; click on an item in your inventory to sell it, type in the name of an item in the search box to buy it. You can set the price, too. Prices change depending on demand. (If you have further questions, add Lunelily. I'll help you as best I can :D)
Chat with our AI personalities
No, it's only in the main Runescape the Grand Exchange was made.
you have have to be a member in order to use the other boxes
Grand exchange
At the Grand Exchange.
Not sure, I think you can but I have never tried it. Yes, you can.