Geeetech

Hi, I did my first print with my Prusa I3 Pro B by a Thingverse sample cube design: https://www.thingiverse.com/thing:1278865.
I observed that print quality is very low.
Which could be the causes?

I attached 3 photos.

Hi guys, I'm a newbie and I would to know what I must do after assembling.
I suppose I must follow these steps:

1) Install Repetier-host.
2) Install firmware and drivers.
3) Calibrate axes.
4) Calibrate extruder.
5) Print my first piece.

Are these steps correct?
Where can I find tutorials to do ...