It's a bit pricey, but this is the Bible of underwater habitats: https://www.amazon.com/Living-Working-Sea-James-Miller/dp/1886699011/
Here are some cheaper but less comprehensive options:
https://www.amazon.com/Ocean-Outpost-Underwater-Springer-Popular/dp/1441963561/
https://www.amazon.com/Undersea-Colonies-Dennis-Chamberland-ebook/dp/B0040ZNS1E/