Have you heard of market-product fit?
If you are curious to learn, the internet (to me it's mostly Twitter!) can be an incredible avenue.
I love catching snippets of lessons/war time stories from successful entrepreneurs around the world because the fundamentals of business don't change. It's how you apply to different markets that might vary.
In that vein, here's a very interesting article from Paras Chopra, my latest favorite writer on the topic of startups. (I know my favorites change every week but hey such is the power of the internet!)
I really enjoyed this blog post since it fits my current journey and wanted to share with you.