I completed HSC in 2010. Unfortunately, I stopped studying and started working with friends. Which course can I pursue?

I was wondering if I can complete my UG & PG courses in travel & tourism from Nalanda Open University. I was also looking for a better advice about the courses I am looking for. I am 24 years old & working with a renowned agency of Rajasthan, established and grounded at Taj Rambagh Palace.