Great so far! I had a hard time figuring out how to make an outline with subcategories, so I used the  to start a new line. However, I just found this that may help https://en.wikibooks.org/wiki/Editing_Wikitext/Indents_and_Lists 
 Which talks about outdenting (which is why I started using  to start a new line because I wasn't sure how else to troubleshoot) https://en.wikipedia.org/wiki/Wikipedia:Indentation 
 This is what I used (from HTML web coding) or  inserts a line break. Both versions of the break are supported by HTML5.  is invalid. 
 The style video link in our course page helps too - Hope that helps/makes sense! There are so many codes you can use!!!