If you dont know what he is talking about you will never be able to HTML. Not a put down, this board is in desperate need of a update, its a dinosaur. However, dont feel bad about jamming all of your words together, everyone here does, its expected. Most guys who come to this forum arent the IT guys that sit in front of computers day in and out. We get dirty for a living and can barley spell.
Here's a pic that illustrates a relatively simple way to get just paragraphs and line feeds for readability.
Taking a screenshot was the easiest way to show, as the forum tries to execute all the examples, which doesn't do any good for explaining.
You only need the html code once at the beginning, and you can type your post as you would and type the br linefeed code once, then copy/paste it wherever you want a break, saves some typing that way.
Use the preview; if anything is borked, go back and fix it before hitting post.