Virtual Network Computing (VNC)
VNC allows you to have remote graphical access a linux computer.
Install VNC server on the computer you want to remote onto (the host):
sudo apt-get install tightvncserver
Install VNC viewer on the computer you want to remote from (the client):
sudo apt-get install xtightvncviewer
Run VNC server on the host computer:
tightvncserver
Run VNC viewer on the client computer:
xtightvncviewer ip_address_of_the_host:1
On a Kindle Fire install Mocha VNC app instead of xtightvncviewer.