Cockatiels, vet approved resources?

Good day, I am a first time Cockatiel owner and have scoured the internet to absolute exhaustion and frustration as I keep running into contradictory advice and popular opinions stemming from unknown origins. I am wandering if there is any kind of vet approved reading material/resources, anything that can provide pet owners with reliable general care and enrichment advice for Cockatiels. Thanks for any advice you can offer in this regard.

Hello!   I've made some enquiries, and the Royal Veterinary College have a useful factsheet that you can view here.  As one of the largest vet-schools, they can be depended on to be quite up to date:  https://www.rvc.ac.uk/Media/Default/small-animal/documents/Cockatiel-care-fact-sheet%202017.pdf?fbclid=IwAR2-_Ha_L1NXtZMjSIKAsyoH-M6C9Nvm-Iw4iLxDs-MUGwYtse4B4ObVtn4    I hope that it is useful.

Thank you, much appreciated.