Can we use this site on personal systems and what is the registration process?

Ixigo is a public travel infomedia, so you can definitely access this site on your computer. You don't need to login or register to access the information available on ixigo. However, it is recommend you remain logged in via Facebook (as you have already done), so you know when your questions are answered, or you can manage your personal page and view alerts. That's all it takes! Hope this answered your query.