Learning from course(Web Design)

Learning from Interactive Web Design the first important things is need to have a good and won't lag laptop.
That is because I have face a problem that when I am doing assignment of Wed Design, the software crash or laptop lag.

Turn in the main point, css & html is the first thing we have to learn.

Here is some link that I online refer it.

https://www.codecademy.com/en/tracks/htmlcss

https://www.youtube.com/watch?v=qKoajPPWpmo&list=PLr6-GrHUlVf8JIgLcu3sHigvQjTw_aC9C

HTML is the Hypertext Markup Language and CSS is Cascading Style Sheets, there are two of the core technologies for building Web pages. HTML provides the structure of the page and CSS the visual and aural layout, for a variety of devices. Along with grapg=hic and scripting. HTML and CSS are the basic of building Web pages and Web Applications.

That's all I know about the basic css & html.