Kill Team: Octarius
Although I've been in the hobby for over 20 years, it wasn't until a couple of years ago I actually started playing games of Warhammer with my introduction being via Kill Team. This is one of those really fun skirmish games you can dive into, learn the ropes, and try out different forces to see what you like. Tempted by Orks, just buy a handful of models, no need for an army, and dive right in. It's also handy that the games can be quite quick as well due to the (usually) fewer units on the table.