Open Source Contribution

Go on github filter projects via tags like tech stack you would like to contribute to, and probably sort based on stars.

Check the project if its been active by commits and releases...

If its popular and maintained by decent org peeps then go ahead and start digging more around the project and repo...

Get familiar with how its used and get familiar with thr repo.

You can start checking the issues section for already logged bugs which you can directly start investigation around.

Start debugging and troubleshooting around the issue.

Fix it and raise a PR with tests.

Address the review comments, and get merged.

The more you solve bugs the more you start digging up the code and understand the nooks and corners.

At one point you'll start to get to a level of SME, you'll start contributing to large things and bigger work items...

Maintainers would have already started recognising your contributions and you would probably become one if in the long run...