[tunareter]

Honestly: yes. LibreOffice is quite a friendly place, and there's even a list of beginner bugs that help with getting your foot in the door. They like new developers.

It might take more than a few hours (e.g. you'll need to set up a dev environment - but the builds are quite robust nowadays unlike some projects), and the codebase is complicated - but contributing to LibreOffice was fun and helped me gain real world software experience. I'd only worked on small personal projects before LO.

You definitely won't cause harm, and there are devs who will try to help you get your patch submitted. (They even employ someone to help new contributors get up to speed and to help get their patches in.) As chris_wot said, get on irc and people will generally be able to help you get set up. (IRC presence tends to vary by time and day, jfyi.)