Revert "Landing pages"

This reverts commit 669e3f51a2d3e3f8de3b7403c3135dbeb11f97c6.
Revert "Revert "Landing pages""

This reverts commit 45b6e9f2d94086e8f49bac48761ec23f4ab82768.
Add changes

youtube Video, FAQ, validation form, etc...