Using Numbered Ordered Lists
Ordered lists are generally used to denote the steps in a project. If you wanted to teach someone how to tie their shoes, you would present the idea as such:
1. Cross lace A and lace B
2. Loop lace A under lace B, pull tight
3. Create loop with lace A
4. Wrap lace B around lace A, creating a loop
5. Pull lace B through create loop, pull tight
This creates a step-by step project that makes it easy for the reader to follow from start to finish. If you use bullets in a step-by-step project, you are likely to create unnecessary confusion. Of course, you can also apply this to providing information to your readers as well when it is a chronologically sensitive matter, such as a synopsis of an Old English heroic epic poem:
An extremely brief synopsis of Beowulf:
1. Grendel attacks Hrothgar's mead halls.
2. Beowulf shows up and offers his services to Hrothgar.
3. Beowulf kills Grendel.
4. Beowulf kills Grendel's mother.
5. Beowulf becomes king of the Geats.
6. Beowulf fights a dragon.
7. Beowulf dies.
As you can see, using bullets in this specific case would not provide the reader with important chronological information about the story of Beowulf, and there is a chance that your readers might think that the information is interchangeable within the list.