After gaining access to the demo website, you will need to create an account. To be able to do that, first you have to click the register button:

After clicking the register button, a pop up will be displayed, in which you have 2 options:

First option is to fill all the fields display, accept Term & conditions and then click Register and a new customer account will be created for you, to be able to look for service providers and start making appointments.
The second option is to create an account using your Google+ or Facebook account, which can be done by clicking the icons on the top of the pop up, allowing out website to use your email address. After these steps, your customer account will be create and you will be able to look for service providers and start making appointments.