Mac for dummies(i.e. Me)

Recently acquired a Macbook Air as a gift to my son. He was wanting to use it for garageband. It was Recently wiped of all data and I had to reinstall the OS onto it. I was successful in that journey. Come to find out Garageband requires later versions of MacOs and I'm not sure if I can get it to work. A lot of info out there but I figured i might ask for help directly.

Open-source Legacy Patcher worth looking into?

This is base model correct? Anything I could do to help my little man out?

I forgot to say this is the first Apple product I've ever used, as well ad being limited on my general knowledge.

Recently acquired a Macbook Air as a gift to my son. He was wanting to use it for garageband. It was Recently wiped of all data and I had to reinstall the OS onto it. I was successful in that journey. Come to find out Garageband requires later versions of MacOs and I'm not sure if I can get it to work. A lot of info out there but I figured i might ask for help directly.

Open-source Legacy Patcher worth looking into?

This is base model correct? Anything I could do to help my little man out?

I forgot to say this is the first Apple product I've ever used, as well ad being limited on my general knowledge.