[mmmrk]

I've had trouble locating English language resources, but if you speak German:

- finanztip.de plus their social media presence are a great way to start

- Stiftung Warentest/Finanztest for general financial product tests

- Finanzfluss' social media presence is great, too.

- Smaller scale sources like Finanzwesir, Gerd Kommer's books plus his company's blog for well researched treatises of all things finance, backed by data.

- Education by workshop companies like Madame Moneypenny that teach hands on.

Those are my favorite sources.