First: welcome to the forum
You can get an avatar by filling in a link to the pic in your "My home" button. If you don't find any propper links, try using the links given in the "about this website" category, and then "choose your avatar" topic. Just klick on one of those links, shearche for a pic you like and fill in the link next to the pic.
I can only tell you that if you find the 3 items you can go up in a cave, somewhere in the middle top of the first map (someone will be able to give you a more exact location) and there you can use those items.
