Network
When looking at networking basics, understanding the way a network operates is the first step to understanding routing and switching. The network operates by connecting computers and peripherals using two pieces of equipment; switches and routers. Switches and routers, essential networking basics, enable the devices that are connected to your network to communicate with each other, as well as with other networks
Learn more about network: http://compnetworking.about.com/od/basicnetworkingconcepts/Networking_Basics_Key_Concepts_in_Computer_Networking.htm
Web tehnologies
HTML, CSS, PHP, JavaScript, ASP.NET, XML, SQL are web technologies that make website or some web application.Web technologies are related to the interface between web servers and their clients. This information includes markup languages, programming interfaces and languages, and standards for document identification and display.
If you want to learn about web technology, you may wish to start here: http://www.w3.org/standards/