QEMU is participating in the Google Summer of Code and Outreachy open source internship programs again this year. These 12-week, full-time, paid, remote work internships allow people interested in contributing to QEMU get started. Each intern works with one or more mentors who can answer questions and are experienced developers. This is a great way to try out working on open source if you are considering it as a career.
For more information (including eligibility requirements), see our GSoC and our Outreachy pages.