With effect from 16th March 2015, all Visa , Passport, OCI, Consular Services at VFS Application Centres in London (Goswell Road, Paddinton and Hounslow), Birmingham, Edinburgh, Manchester, Liverpool, Bradford, Newcastle, Belfast, Cardiff, Bristol, Glasgow and Leicester will be granted on the basis of appointments only.
Applicants must book an online appointment for all Services (Visa, Passport, OCI, and Consular Services) before visiting VFS Application Centres.
Only one person/applicant is allowed per appointment. For family applications each applicant will be required to book a separate appointment.
Appointment can be booked by visiting after completion of the Online Form via VFS website:
http://in.vfsglobal.co.uk/
All applicants will be required to bring the printout of the appointment letter along with the application form at the time of submission. No applications will be accepted without appointment after 16th March 2015.
All applicants must reach at the above VFS Application centres 15 minutes prior to their scheduled appointment.
No applications will be accepted by post.
Here's the link for the visa guide on TripAdvisor which shows you what to put in each field:
http://www.tripadvisor.co.uk/Travel-g297604-c220098/Goa:India:Visa.Guide.html
So in summary Process is reasonably straight forward
Complete the form on line
book appointment
rock up with form, Photos ( remember 50 x 50 not normal Id photo size), Passport, booking conformation and Itineraries with your name on them, and Special delivery envelope if you want VFS to return you Passport by post.
Alternatively yes there is now a visa on arrival BUT THIS IS ONLY FOR THOSE ARRIVING BY AIR - IF YOU ARRIVE BY CRUISE SHIP YOU HAVE TO APPLY TO THE EMBASSY AS PER ABOVE.
http://goindia.about.com/od/visas/qt/Indian-Tourist-Visa-On-Arrival.htm