Before everyone starts posting her/his own projects in this thread I'd like to pitch my idea to what I personally am looking in this situation: a board similar

Before everyone starts posting her/his own projects in this thread I'd like to pitch my idea to what I personally am looking in this situation: a board similar to https://starters.servo.org/ https://starters.servo.org/ for open source project where I can learn a new language by fixing bugs/resolving issues that can be ranked from beginner to expert, so you can find interesting projects fix bugs and learn new languages at once. The link I have posted only covers the mozilla servo project and I can see this concept working with multiple projects/languages/etc. Of course one would need to heavily moderate the submissions but I think this idea is great. Anyone know if something like this exists ?