Harbor Freight solar panels are a fun and easy place to start if you just want to play around and get your feet wet figuring out about solar without sinking a lot of money into it. However the 45w 3-panel system isn't a very cost effective setup if you want to do more than charge a few small devices. I have a whole thread on here of the four 140w panels I set up with 4 Trojan deep cycle batteries, and another thread on moving 3 of those panels to my travel trailer and my experiences off grid boondocking with it. It's enough to live comfortably in a minimal sense if you are conservation-minded, but keep in mind, this is sans-refrigeration.
What are your requirements? Starting there will get you a reality check on feasibility.
In a crazy world, it's the crazy man who can get by - and it's about to get cray-cray up in here.