For new readers, this may not be the place to begin in the Liaden series (I recommend Agent of Change or Crystal Soldier). For those who are familiar with the series, they are just as fun and well done as all the others.
Guaranteed Delivery: One of the early deliveries by Aelliana and Daav abroad the Ride the Luck. Not a whole lot of substance, but fun.
Kin Ties: takes place after Korval breaks from Liad in the aftermath of the book, I, Dare. Ren Zal returns to his birth world with Anthora, his lifemate. This story doesn't stand on its own as well as some of the others. Its best read with Changeling, the novella which tells how he came to leave his homeworld in the first place - which is also available for the kindle.
A combination of Changeling and Kin Ties would stand on its own quite well without any prior knowledge of the series and provide a more satisfying experience overall.