what now after installation?

i installed eclipse and sdk and started my first project in eclipse, by creating it from new android project window by specifying the name of project package etc.... and now there is an empty eclipse screen looking at me and i am looking at it back and nothing is happening. what should i do next? how do i begin building up an application? write java code in eclipse? how? if not what? can you give some guidance?

 

okay then how can i start with hello world program? sorry for being a pain but this is my absolute first time using eclipse and writing java code.