Populous 3 Tutorials has been releasing, for more than a month now, several videos of single player levels on YouTube.

This idea came from Divinity, who is sharing with everyone, the game and all different kinds of single-player levels that are out there. If you happen to have a hard time in some level, Populous 3 Tutorials is the place for you. There you will find simple and effective ways of suppressing your difficulties in any level, so that you don’t get tied in a world, because you just don’t know an effective way to win the game. If you happen to look for a campaign that isn’t there yet, don’t stress out, you can always ask when it will be available, or recomend it.

At the current time these are the ones available:
Populous: The Beginning (official) — STATUS: COMPLETE (25/25) plus tutorial
Populous: The Beginning Katara’s Voyage — STATUS: COMPLETE (10/10)
Populous: The Beginning Tikal’s Journey — STATUS: COMPLETE (25/25)
Populous: The Beginning Anniversary — STATUS: ON GOING (6/25)

Many more campaigns will be available in a near future, so expect a lot of work for you to keep up.
See the Populous 3 Tutorials YouTube channel. If you would like to download any of this campaigns and many others click here