What is the process to be followed for Aadhaar enrolment and what information is to be provided to get Aadhaar?

An individual seeking enrolment to visit an Aadhar enrolment centre and submit a request (as specified) alongwith valid supporting documents.
The enrolment operator shall capture the following information during the course of enrolment:

Mandatory Demographic information (Name, Date of Birth, Gender, Address)
Optional demographic information (mobile number, email)
Details of Mother/Father/Legal Guardian (in case of HOF based enrolment)
And
Biometric Information (Photo, 10 finger prints, both Iris)
After completing the enrolment the operator shall return all the documents alongwith an acknowledgement slip containing the applicable charges.( New Enrolment is Free of charge)
List of valid supporting documents is available at List of Supporting Document
You can locate the nearest enrolment centre at : Bhuvan Aadhaar Portal