Hi Sedona Rocks,

I've personally used books and chord charts before, and they're pretty helpful if you don't have an internet connection. Remember, when you can, GT has a pretty big library of chord charts right here: https://www.guitartricks.com/chords

It's also sometimes really fun to try and learn by ear as well. That is, play a song you really really enjoy and try and 'pick it out' just by listening to it.

But yes, I'd say books and charts are the main offline tools I've used. Song books too! I had a Beatles song book that referred to all the time and now it's all torn up.

Most popular bands/artists have songbooks, and that's also another great way to practice and learn!