Hi Irish,
Happy to help you
HTML5 is the advanced version on HTML, with more media and location support. HTML5 allows adding dynamic content to the Webpage.
HTML5 added tags:
audio: to define the sound content.
video: to define a video or a movie.
source: to define multiple media resources for video and audio.
track: to define text tracks.
canvas: to draw graphics, and is used to draw a 2D drawing with height and width attributes.
article: to define an article.
header: it specifies an introduction for a document.
footer: to define a footer for a document.
wbr: to define a line break
time: to define a date/time.
geolocation: to know the user's location.
Tags supported by HTML, but not supported in HTML5:
big, center, acronym, frameset, applet, strike and center
To learn more basics you can learn online on w3schools.com