Revert "basic teaching page"

This reverts commit cc296a43bba6d4671e4a959b467d47f9a252f6ef.
Revert "attempt to fix DNS"

This reverts commit 4939ddd375f58a3f4ce17c0786cd9f6365655512.
Revert "Revert "attempt to fix DNS""

This reverts commit 022126f18f9c185a05b5badc17d55145c9d8ad9c.