I just started my Android programming and I had couple problems... :(

1.  When I tried to start my device on AVDM (basic Nexus 5) I had only "android" on virtual screen i seems like "never ending booting", because I was waiting 20 minutes.
I think I solved this problem - I create new device (nexus 4) and reduce RAM to 512MB and it launched and now I can use my virtual device.  Is was good way?

2. When I tried to started my "hello world app" I have error:


3. I don't have windows icons and I can't move window with my virtual device: