As Asaban said, charts are useful only in beginning, its a guide for you in this area, its good way to start out, later on you wont need charts if you put in work to understand why you can or cant push certain ranges in diff situations, charts gives you very generalized idea what to do. I have not seen a reg in higher games who have never used Holdem resources or icmizer, it's crucial study tool.
These tools are best for analyzing preflop situation, especially calling allins. Asaban said that mainly you will making your decisions using VPIP and PRF, what is quite inaccurate, you can use these stats only on players who you have small sample size and their stats are way off, for example 22/5 40/10 or something like that, where you obv see that if they play aggressive they have it. You need to put in your HUD stat called Raise first in by each position, it wont be to helpful in the beginning, but you will fast get sample sizes in 180s so you will get way better understanding about your opponents and their playing tendencies than from VPIP/PRF.
Check out Collin Moshman 180s videos in video section, also tomsom87 have some good videos there.
As i said before if you work hard you will find money in 180s. It is harder now as games gets tougher all the time, but that only means that you need to put in the work.
To give you some proof that it is possible, i posted my this years graph from 180s, i started playing 180s in January only 6-8 tables and i wasn't even beating 2.5$ ones at the time, when i realized that i started to work on my game, 2-3 times a week for several hours at time, just looked at my hh, and studied the game as hard as i was able. 11 months later i am playing ~30 tables at the time and all games up to 35$, so dont give up it is possible.
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