If code is where you’d like to contribute, a lot of large projects label some non-critical and low-complexity fixes for known issues as “beginner contributions”. They should be relatively easy contributions, for folks with some background in code.
Of course, if you have spare cash flow, donate a fiver to your favorite open source project. It goes a long way.
If simply using it is the goal, check out f-droid for android, an alternative app store for open source apps, and look into open source replacements for your usual suite of apps. It feels good to use, and to know you’re keeping your own data yours.





“Liberate” is an interesting choice of term, given the communities in question aren’t in Russia’s sovereignty.
To be clear, I don’t personally have proof of whether the citizenry is broadly thrilled about or terrified of the soldiers in their streets.
I just believe it’s journalistic best practice for any case where an army taking part in a war of territorial expansion claims territory to use a neutral term like “control” rather than a biased one like “liberate” or “oppress”.