You can visit the website to familiarize yourself. (https://uidai.gov.in/). Only address can be done easily online. For rest of the services you need to visit the Aadhaar enrollment centers that include post offices, banks etc.
In the website home page, select Update at enrollment center under the pink heading of aadhaar update. This will take you to the page wherein you can find out the nearest center for you and you can avail the services.
You would need one Proof of Identity document that has your correct full name or document. This would include Passport, PAN card, Voter ID etc. There is a nominal charge for services, please also carry other supporting documents,
Before going please check that you have at least two ID document with your correct name and spelling. In case you do not have then you would have to get a name change affidavit done via a Notary, publish in two news papers ( English and Vernacular) and then keep all the originals and approach the Aadhaar update office.
Aadhaar update center locator image is attached, please just follow the drop down menu.