WP:FOOT#Citing a footnote more than once

You may be looking for:

Help:Footnotes, for technical assistance with creating references and other footnotes
Wikipedia:Citing sources, a guideline on how to organize and format references
Wikipedia:Footers, guidance on how to organize the sections at the end of an article
Wikipedia:WikiProject Football
Wikipedia:Don't shoot yourself in the foot, an essay
Wikipedia:Shoot yourself in the foot, a related essay