The Long Way to a Small, Angry Planet

The happy-go-lucky multispecies ragtag crew of the Wayfarer, a wormhole tunneling ship, get a once in a lifetime chance to open a new wormhole to a new planet. The pay is great and the authorities promise they'll be safe, even if they do have to pass through some dangerous systems. However, as usually happens, things aren't quite what they seem with this contract.

Adorable characters, nice world-building and very up-beat attitudes make this book really enjoyable.