As Christians we want to understand what Jesus said, but that’s not always easy when we come to his parables. Below are the best resources I am aware of to learn how to interpret Jesus’ parables well:

Shorter Scholarly Work –
Interpreting the Parables by Craig Blomberg
This book is more focused on how to interpret the parables as opposed to going through each and every parable, though he does go through some of them.

Longer Scholarly Work –
Stories with Intent: A Comprehensive Guide to the Parables of Jesus by Klyne Snodgrass
This work goes over each and every parable and therefore is quite long, 864 pages. Still a great reference, or read if you have the time and inclination.