My dad is german so I'm using this as a way to better communicate with him. :)
Willkommen, viel glück!
I started two days ago. I have studied all lessons at https://learn-german-easily.com. I think I have learned a lot in the last 48 hours. I recommend going through lesson 1-33 on the before mentioned website and use duolingo at the same time. Duolingo really helps with the exercises - I get to write in deutch. But until now it has been so easy because of the 33 lessons (and the fact that I'm Danish, which makes the pronunciation a piece of cake :))
By the way, I have nothing to do with that website! I just feel it gave me a great start (however, I'm not a buyer, so I haven't bought it's "XL Package" and will never do it!).
Don't just use Duolingo - use plenty of different resources.
Later on try: Readlang; Clozemaster; etc etc