Hi Jatinder,
That’s something we’ll need to let you figure out, I’m afraid: ultimately building an Eventbrite-like service is going to be a fairly involved process and if you are unsure how to proceed it may realistically be best to approach and work with a suitable developer.
That said, once you’ve scoped things out and identified what customizations you need to make please don’t hesitate to post new threads with any more specific questions – though we can’t always help a great deal with customization work we might be able to point you in the right direction – but what you’re asking here is so general and high level I’m just not sure there’s much else I can tell you.
With that in mind I will go ahead and close this thread, but once again please do feel free to create new threads as needed for any more specific questions.
Thanks – and good luck 🙂