Signing up for a Site24x7 account is very simple.
Go to web page http://site24x7.com and click on the Sign Up button at the top right corner.
Choose an account that suits you best (FREE, PROFESSIONAL & ENTERPRISE) and click Sign Up. You will be directed to New User Sign Up page.
Enter your email address and a password of your choice in the respective tabs and click I agree, Create account tab to start your Site24x7 account.
Once you sign up, you can start adding different monitors as per your requirement. Click site24x7help.wiki.zoho.com/How-do-I-add-new-Website-Monitors.html to start adding new monitors.