It is a yellow citron used by the Jews during Sukkot, their week-long holiday. To know more about Etrog, read this article: http://en.wikipedia.org/wiki/Etrog

Any break in the skin is at risk of infection. If your spots itch, avoid scratching the area. Scratching can cause abrasions. If you don't know how to take care of wounds properly, you might get an infection.

Role playing is creating or reliving a scene, whether fictional or real, and acting as one of the characters. Role playing can be a very good education tool, especially for little kids.

You're a member of your hometown.

School would give you the necessary intellectual training that you need. You can also attend various workshops and seminars on your chosen field.