As a beginner, I listened so many videos and read so many articles in Blockchain and cryptocurrencies too. It is not easy to find good ones. I also highly recommend "Blockchain for Beginners" by Andreas Antonopoulos. It is worth your time.
If you like this, you may like to watch "Introduction to Bitcoin by Andreas Antonopoulos too; his link also in my previous post. If you go to his youtube channel, he has more than 200 videos in cryptocurrencies.
Reference; Blockchain for Beginners by Andreas Antonopoulos (youtube)