Can the community recommend some basic Bitcoin educational resources for beginners? Tutorial guides, videos, and eBooks are preferred.

I am interested in starting investing in Bitcoin and want to learn the fundamentals on how to do this safely and wisely.

I already bought and read the Bitcoin for Dummies book and there is too much technical information for me to understand.

I am looking for some recommendations to accurate YouTube educational tutorial videos, short guide articles, and eBooks to learn the basics of Bitcoin before investing.

What are some good places to begin learning about Bitcoin? How much knowledge should one have before buying Bitcoin?

Are CoinBase or Kraken good services to use?