Im new, can someone explain?

Hii, im new on this sight and wanna get some thigns from the layout area. 

My first question is what are blinkies? i see them everywhere on the layout and have no idea what they mean or are

Second one is, where do I copy and paste thing from the layout board to customize my board?

Thanks for any help!

P.S. If someone would like to friend me and talk, then im all for it :)