P tags define paragraphs of text. Most extra spaces are ignored, including line breaks,
except inside of some tags.
For historic reasons, links are called anchors. Anchors
are created with the
<a> tag combined with an
href attribute. This tag is very
important, of course, to
link to other pages.
The full name for a link is a hyperlink. The H in HTML stands for HyperText: HyperText is text with hyperlinks. Now you know ;)