Welcome to the ODO project!
If you think about contributing to ODO, please read through the contrinuting document and check in which area(s) your help could be most effective. If you don't find anything for you in this document that really works for you: Never mind, we'll find something for you.
What you definitely need is an e-mail and a Codeberg account. When you have both, just contact
straightway (at) gmx.org and write some words about yourself, your skills, your motivation, with how much time, how regularly and in which area you would like to contribute.