Moving on with a bit of text. First, notice that line returns in the source text have no effect. Neither do embedded spaces in the source code.
In order to cause a line break you have to put a <BR> command or a <P> command. While a </BR> and a </P> are syntactically ok, they don't have to be used.

A <P> command causes a line break with extra spacing - i.e. for a new paragraph. A <BR> command just does a line feed with no extra space.

If you must have more than a single space, for each space character you need, use &NBSP;.

The <HR> command causes a horizontal line to be drawn across the page.

And if you want to center your text, use <CENTER> with </CENTER>.

You can give a style to text for headings with the heading command <H1> ... <H6>. These have to be paired with a </Hx> statement or that style will continue to the end of the page. Yuk.

Heading 1

Heading 2

Heading 3

Heading 4

Heading 5

Heading 6