There is a new revision of this tutorial available for Linux Mint 17.1 (Rebecca).
The Perfect Desktop - Linux Mint Debian 201009 - Page 2
Now that we have left GParted, you should see your new partitions in the Linux Mint installer. Mark the / partition...
... and right-click it. Select Assign to / from the menu:
The swap partition can be left as is. Afterwards click on Forward to continue with the installation:
Type in your real name, your desired username along with a password, and click on Forward:
You don't have to change the GRUB settings. Click on Forward:
The next screen shows us a summary of the installation settings. Click on Install to start the installation:
The Linux Mint system is being installed. This can take a few minutes, so be patient:
After the installation is complete, we must reboot the system to use it. Click on OK:
To restart the computer, select Quit from the menu...
... and then select Restart:
The Live-CD desktop shuts down. At the end, the Linux Mint CD is ejected. Remove it from the CD drive and hit the <ENTER> key to boot into your new Linux Mint desktop:
Your new Linux Mint system starts. Log in to the desktop with the username and password you provided during installation:
When you log in for the first time, you will see the following help window. Click on Close:
This is how your new desktop looks:
Now the base system is ready to be used.