w3schools is a great website to find what ever you need about html. If you are new to the htlm scene it gives you an introduction on what it is and the basics. They give you different turtorials on headings, paragraph, tables, lists, etc. Not only does it give you a large selection of turtorials but it is straight to the point. There are no adds which is a plus for me because I am really impatient closing adds. I stronlgy recomend everyone to use this webstie without it. I use this website to review what I know and grow my Knowledge on html.
Mozilla is another website that shows information on html. Like the pervious website it holds all the diiferent formating on the left side of the screen. unlike the last website the information is more organized and gives you a title for each section. Under the title it gives you various links on sentions about that title. So lets say there was a title named css. Under that it will give you different other tabs about that topic such as styling text. I would aslo suggest this website because it is very helpful and shows you everything on html.