Thanks for contributing! Reading the guidelines is a good place to start.
Don't worry too much about making mistakes. All changes are recorded and easily reverted.
Make these things into redirects to provide a sort of pseudo deletion. Redirects are less visible in places than pages. For instance Special:AllPages has the ability to hide redirects.
This category has the following 8 subcategories, out of 8 total.
Pages in category "Contributor Resources"
The following 10 pages are in this category, out of 10 total.