# Learn HTTP/networks (including CORS & WebSockets) > **HTTP** The Hypertext Transfer Protocol (HTTP) is an application protocol for distributed, collaborative, hypermedia information systems. HTTP is the foundation of data communication for the World Wide Web. - Wikipedia > **CORS** Cross-origin resource sharing (CORS) is a mechanism that allows restricted resources (e.g. fonts) on a web page to be requested from another domain outside the domain from which the resource originated. - Wikipedia > **WebSockets** WebSocket is a protocol providing full-duplex communication channels over a single TCP connection. The WebSocket protocol was standardized by the IETF as RFC 6455 in 2011, and the WebSocket API in Web IDL is being standardized by the W3C. - Wikipedia ##### HTTP - [HTTP: The Protocol Every Web Developer Must Know - Part 1](http://code.tutsplus.com/tutorials/http-the-protocol-every-web-developer-must-know-part-1--net-31177) [read] - [HTTP: The Protocol Every Web Developer Must Know - Part 2](http://code.tutsplus.com/tutorials/http-the-protocol-every-web-developer-must-know-part-2--net-31155) [read] - [HTTP Fundamentals](http://www.pluralsight.com/courses/xhttp-fund) [watch][$] - [HTTP Succinctly](http://code.tutsplus.com/series/http-succinctly--net-33683) [read] - [High Performance Browser Networking: What every web developer should know about networking and web performance](http://chimera.labs.oreilly.com/books/1230000000545/index.html) [read] ##### CORS - [HTTP Status Codes in 60 Seconds](http://webdesign.tutsplus.com/tutorials/http-status-codes-in-60-seconds--cms-24317) [watch] - [HTTP access control (CORS)](https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS) [read] - [CORS in Action](https://www.manning.com/books/cors-in-action) [read][$] ##### WebSockets - [WebSocket: Lightweight Client-Server Communications](http://www.amazon.com/WebSocket-Client-Server-Communications-Andrew-Lombardi/dp/1449369278/ref=sr_1_1) [read][$] - [The WebSocket Protocol](https://tools.ietf.org/html/rfc6455) [read] - [Connect the Web With WebSockets](https://code.tutsplus.com/courses/connect-the-web-with-websockets) [watch]