Over the years I've built up a list of collateral. I usually share this list with the people I coach and mentor
Books
User Story Mapping - One of the best techniques I know to help you get an MVP.
Dont Make Me Think - One of the first books I read when I started working for public sector clients. Helps you think differently when creating services and how making things simple and understanding users needs are key.
50 quick ideas to improve you user stories - Want to understand how to create user stories so they are independent and at the same time small enough for the team to complete in a relatively short period of time? If you can do this you can demonstrate to stakeholders you are moving towards your outcomes. This is the book.
Walking Skeleton - It's the approach I learn't from the now Digital Services CTO @Kainos, Rory. It's the approach all product managers need to understand to ensure speedy delivery of outcomes. Your tech counterpart can be a great help here so work with them....
Build Better Products - I seen Laura at a conference back in 2016 in San Fran, she is not only an engaging speaker but really focuses on Delivering products people want to use over and over again
The Phoenix Project - Agile, Lean, are not methodologies. They don't have a prescribed set of steps that are the winning formula. This box helps you quickly understand the mind shift change that you will need to make things successfully work
Starting a community
Building successful communities of practice. Spoiler alert this is firmly focused on people and not processes
Sites and blogs
Government Digital Services - Where it all started for me. I was on one of their first exemplars where Government departments were changing the way they delivered services to UK citizens. I got to work along side the old guard, and learnt so much in a short space of time. Believe it or not the UK Government are ahead in their thinking compared to their private sector counterparts
Mind The Product - You have every product topic under the sun covered here. They also like to keep up with the latest trends
Industry Product Conference - Ok its a conference site, but there are some great videos on here
Intercom - Big on sharing their own learnings. They have a blog and podcast which covers a wide range of topics, not just product management
Roman Pichler - I been on his leadership course and continue to go back to the GO Roadmap, GO Portfolio and the Product Canvas
Videos
Some of these I've seen live, and I often recommend the talks