There are many ways of serving web pages from Raspberry Pi. One of the ways is to install Apache web server software. This is still a standard solution for most of purposes. These things require quite some performance and this is not always an optimal choice. If you need simple webserver for your home project that would easily work with GPIO you could try Python web server.
Python web server relies on flask – an extension that provides web microframework. It allows building and rendering webpages with few lines of code. Sankar have written a short tutorial on how to start with simple static webpage from Raspberry Pi. From there you can move on with more advanced pages that include dynamic content and so on.