Follow these few simple steps to use GUI on your laptop, if you don't have additional screen for pi:
1. Intsall putty from http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
2. Start putty and give IP address of your Pi connected to Ethernet LAN, you can know the ip address of pi from a software Advaced IP scanner: http://www.advanced-ip-scanner.com/
3. Type login and password for your pi.
4. $ sudo apt-get install tightvncserver
5. $ tightvncserver
Once that is done you can start a VNC server from the shell prompt. This example starts a session on VNC display zero (:0) with full HD resolution:
6. $ vncserver :0 -geometry 1920x1080 -depth 24
(If fonts appear the wrong size, add '-dpi 96' to the end.) Or you could create a script to save typing in the whole thing.
7. $ nano svnc.sh (call the file whatever you like)
Add the lines:
#!/bin/sh
vncserver :0 -geometry 1920x1080 -depth 24 -dpi 96
Ctrl-x y <return> (To Exit Nano and Save)
8. Set the file to Execute
$ chmod +x svnc.sh
then to run
$ ./svnc.sh
9. Install VNC on your laptop. Follow link: https://www.realvnc.com/products/ios/2.0/connectguide/connect1.html
10. open VNC on your laptop and connect to ip address from your laptop from Step 2.
11. You will have GUI of Raspberry pi.
