If only I had known what needs to be done...
I just went over the soon-to-be-released report of the Developer Advisory Team, where we sum up feedback from first-time contributors to Ubuntu Development and many noted that they found developer documentation easily and things generally worked out for them, but they struggled finding stuff to work on. The Ubuntu Development team has always been good at creating new TODO lists (merges, Debian RC bugs, build failures, heaps of different bug lists and much much more), but you need to know what you are looking for....