is it an acoustic or electric? i play my acoustic much more than electric so i'll be more help with that lol
also depends what kinda music you wanna learn cause i'm most familiar with metal/post-hardcore and... CCM
but i would say don't ignore music theory
entirely... you just don't have to go super deep into it (cause i know it SUCKS). i'm entirely self taught but over time i learned that it's helpful to learn stuff like modal scales (but that's more helpful on bass tbh) or the number system. but honestly you could also ignore all that if you're just learning for fun, it's just up to you. you can still be a great musician without knowing a lick of music theory!
and don't just stick to chord shapes, you should familiarize yourself with tabs, it just adds more variety and depth into your playing + they're super simple to read
i can probably answer more questions once i know ur specifics