Speedrunning Atomas means playing only on Time-Attack, and it's not very beginner-friendly. Here are some wikis and guides to help you discover new things about the game.

Wikipedia: https://en.wikipedia.org/wiki/Atomas The "References" tab contains links to some useful guides, especially for beginners.

Atomas Wiki | Fandom: https://atomas.fandom.com/wiki/Atomas_Wiki

You can also come in the Atomas Speedrunning Community which I'm part of, and discuss strats: https://discord.gg/grNbfTN