I published a quick guide about DevOps. This guide will help you to understand the fundamentals of DevOps, which groups different older and newer concepts into a movement aiming to have strong automation of all development steps and to deliver high-quality products in shorter development cycles.
Download the guide
If you want to know more about maintaining the backlog in a proper way, you can visit the following post: Key Tips For Maintaining Good Product Backlog in Agile and Scrum. The post describes a way to efficiently organize the backlog items, allowing you to understand the requirements better and providing you with a higher level of detail of what is actually expected from the work or delivery perspective.
More Info
In some of the previous posts, you can find high-level descriptions of Agile principles and the usage of some Agile tools and Agile methodology.