What you will learn:
Which patent database is the best for your search?
What patent databases exist?
where to find further information about patent search?
First you need to decide which patent database you want to use. Most big Patent offices offer Patent databases.

I definitely recommend Espacenet from the European Patent Office!
European Patent office – https://worldwide.espacenet.com/patent/search
I created two Videos for Youtube and my courses to help you get started with Espacenet! Have fun :)