How to start training my dog?

I had a German Shepherd around that age too, so I’ve been in the same spot.

What helped me was keeping things simple — focus on basics like sit, down, stay, and recall, and keep sessions short and consistent. 

I actually worked with Elite K9 Group and trusted them with my dog, and that really helped me understand not to rush things. 

1. There are a lot of ways to start training a dog:
   
2. Googling some guides for beginners;
   
3. Taking an online course by Doggy Dan or just simple courses from Udemy.
   
4. And my advice: start your training with strict timing and crate training not commands.