Garageband does have an in-built tuner but it's not nearly as good as other tuners, including plug-ins, pedals, applications, and more.
Editing your drums in Garageband can be the difference between a boring or mad cool rhythm section.
Reverb is probably one of the most popular effects used in mixing and music production, and for good reason: it sounds awesome. If an instrument or effect is too dry or boring, sometimes all it needs...
Where can you get the accordion for Garageband for free? There aren't a lot of options available, but you can access one.
The Focusrite Scarlett 2i2 (3rd Gen), in my opinion, is the best audio interface for beginners to home recording.
If your guitars don't sound as good as you want them too, this article explores some tactics you can try out.