As I understand it, some of the lack of in-game information is intentional. Your avatar awakens with a busted multitool, a damaged suit, and no memory of how they got there. The three main quest lines (base building, Artemis, and ATLAS) introduce important lore and provide some blueprints -- but not everything.
The devs expected the community to work togther, to pool information, and for the hive-mind to come up with their own answers and resources.
This has largely been successful. The (unofficial)
No Man's Sky wiki is probably the best place to start for most questions. Refining discussed
here.
And, there's a smartphone app! (of course ;-)