Send us an article, book, course or template you think belongs here. This is how a good deal of the library gets found.
A person reads every submission. If it fits, somebody checks it against the same standard as everything else already here, which means reading the thing rather than the description of it, and writing our own summary rather than reusing yours.
Most suggestions are not added, and that is not a judgement on the material. The library is deliberately narrow, so a good article on a subject already well covered usually loses to keeping the section short.
You will hear back only if we have a question, and there is no queue to check or status to follow. The address is used for that and nothing else, and it never joins a mailing list.
Nothing on this site is paid for and a submission cannot buy a listing. We do not accept sponsored placements, we do not add a link in exchange for one back, and a submission from an author is treated exactly like a submission from a reader. Our editorial policy and disclosures set out the whole arrangement.
Material that says something the rest of the library does not. A method explained by somebody who has used it, a book that is the standard reference on its subject, a course whose syllabus is published rather than implied, or a concept a reader would reasonably expect to find here and cannot.
If you have found something wrong on a page rather than something missing from it, contact us instead. Corrections are recorded on the changelog.