well what i did was, i found a picture of a leopard gecko off Google and saved it to my computer. Then when i was editing my profile, i clicked the option "browse" and it brought up the folder with all my pictures, so i clicked on the one with the gecko on it, and it suddenly appeared. And usually you can determine the age of your gecko by either a baby, juvenile, or an adult. usually it varies in size. Adult female leopard gecko's tend to be 8-9 inches, and males 10-11. So if your gecko is between those sizes thats how you can tell where its an adult our not. Babies tend to grow fairly quick so its kind of hard to determine the age. Hope this helps!