Just to let you know, you need to search and learn about a lot of things first.
For data access on a website, you need access to a database. If you don't know about SQL (or any other query language), Query, Database, Tables, Server ... then you should start there.
To read those databases, you need to write code (ASP.NET, PHP, etc) that runs on a web server (Apache, IIS, etc).
If you want to create a website, I recommend you start working with WordPress, Joomla or other CMS (Content Management System) for you to familiarize with a lot of things before jumping to the advance stuff.
YouTube is a very good friend and teacher! :) Start by looking some tutorials there. Hope this will guide you to what you need.