Rules There are too many of them. You do whatever you want. You can even be so great that you actually achieve a complete and total failure. Then you can make art. But you never have to follow any of the rules and anyone who says you do... well he or she just hasn't failed enough to realize this.
Experts Art is subjective. There inherently cannot be experts.
Series Artists are told to work in series. It is one way of doing things. To posit that it is the only way or the best way is as dumb as saying every painting should be 40 percent earth tones. Huh? Yeah, that dumb.
Reading Graffiti Art Street art is the best abstract painting of the past 60 years. Rationalizing one wall as somehow better because of individual authorship (instead of innovative composition) misses the whole point. Let's not take the people's medium against the power of property and make it into another celebrity manufacturing game. Enjoy abstract vandalism at its most beautiful without obsessing over who authored the specific letters on the wall. And what is closer to the bottom of the barrel: Street art gallerists, street art curators or street art academics? On what sad date did aerosol spray paint become synonymous with cotton candy?
Artists As Their Own Manager You gotta do this, and you gotta do that, and most of all you have to buy the art advice book on how you can make it on your own as an artist by doing all of this stuff on your own. Advice is now an industry. Just make the art and sell it for whatever it takes to get it out of the studio and make more. Don't buy the book. It is probably rehashed if not flat-out plagiarized from the other books. There is no blueprint for a masterpiece and there is no blueprint for a successful art career. Like Gandhi said, "What you do will not be important but it is important that you do it." he didn't add "...so buy the overpriced book and DVD series on how to succeed at doing that unimportant important thing."