I'm Noshoning - a small webdev with "absolutely no experience". But i have some. I have created a small smiley face and it was SWEATY. I have given this page an order... TO LEARN PEOPLE HTML!
The opening <p> and the closing </p>. Are not the same because you can't use them like this:
</p>SAMPLE TEXT<p> because the closing tag is the closing tag (in other words, the end of the tag). And the paragraph is easy (if you understood what i said before...)
If we compile this
<p>hello world!</p>
the output will be
hello world!
Bold Text/Strong Text
Italic Text
Underline Text