Product management introduction
https://www.mindtheproduct.com/2011/10/what-exactly-is-a-product-manager/
https://www.mindtheproduct.com/2019/06/product-is-hard-by-marty-cagan/
Vision,Strategy
https://www.romanpichler.com/blog/agile-product-planning-vision-strategy-tactics/?doing_wp_cron=1555705894.9472498893737792968750
https://www.romanpichler.com/blog/tips-for-writing-compelling-product-vision/?doing_wp_cron=1555705916.6649711132049560546875
https://www.executestrategy.net/blog/write-good-vision-statement
Agile - Process
https://www.mindtheproduct.com/2019/06/lean-agile-design-thinking-by-jeff-gothelf/
https://medium.com/chingu/a-short-introduction-to-the-scrum-methodology-7a23431b9f17
https://svpg.com/beyond-lean-and-agile/
Dual track agile (advanced)
https://medium.com/kevin-on-code/dual-track-agile-focusing-on-customer-value-a2e39312585b
Extra:
https://svpg.com/the-importance-of-failing/
MVP
https://svpg.com/minimum-viable-product/
https://www.mindtheproduct.com/2019/01/what-does-a-successful-mvp-look-like/
https://medium.com/swlh/how-to-build-an-mvp-in-the-right-way-in-2018-f538df0f2bba