Welcome to Workshop and thanks for making your first post. This is a good topic and I'm sure other members of the Workshop community will be keen to help. Have you got any photos of your garage that you could share? And have you got any thoughts about what you need in your workshop?
You might also be interested in these discussions:
Good project @Carlos. Have a look at this discussion - should give you some ideas to get started - https://www.workshop.com.au/t5/Gardening/Organising-workshop/m-p/3311
I'd recommend pegboards, lots of shelves and storage tubs. Make sure you make good use of vertical space. You'll obviously also want some sort of workbench. I really like the ones on castors that you can wheel around for flexibility - they typically have lots of drawers for storage, too. If you don't want to splash out on a fancy stainless steel one you might build your own as your first DIY project.
If you can get your hands on some pallets you can use them for some great storage options. Here's some ideas:
Great to see you get plenty of ideas @Carlos. I hope you can share your progress on Workshop with us as you transform the garage.