Car GEEK? Please need car helpy!

Hey guys I was wondering if anyone knows how to change an alternator, I’m pretty sure my Nissan Altima 2015 needs a new alternator or battery. The battery is pretty easy I’ve done that before. The alternator on the other hand requires way more tools than what I have in my little box. I just can’t seem to catch a break and having car issues on top of my other issues is sickening.