Ask someone to give you a walk through of the code, and overview of the domain, talk about the terms used and what they mean, etc.
Find the simplest patch you can make (ie. improve the README!) and do whatever the team/company does for that process.
Then, ask for a bug to work on. Something not time sensitive. Bugs are a great way to force you to use the app, dig around a bit, get familiar, and let you make contributions without having to start off deciding how to implement something new.
And as others have said.. ask ask ask.
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Ask someone to give you a walk through of the code, and overview of the domain, talk about the terms used and what they mean, etc.
Find the simplest patch you can make (ie. improve the README!) and do whatever the team/company does for that process.
Then, ask for a bug to work on. Something not time sensitive. Bugs are a great way to force you to use the app, dig around a bit, get familiar, and let you make contributions without having to start off deciding how to implement something new.
And as others have said.. ask ask ask.