End of the day, you're never going to find any good books on this subject whatsoever and no one's going to teach it to you.
I think some of those books could be approached as building a toolset in order to research strategies. However in actual design there's reasonable you'll ever find.
If you want to learn how to design strategies, I suggest backtesting as many ideas as possible and possibly even executing some of them. If you lose money, I assure you'll quickly learn where you went wrong. There's no better teacher than a proper beating in financial markets..
I think some of those books could be approached as building a toolset in order to research strategies. However in actual design there's reasonable you'll ever find.
If you want to learn how to design strategies, I suggest backtesting as many ideas as possible and possibly even executing some of them. If you lose money, I assure you'll quickly learn where you went wrong. There's no better teacher than a proper beating in financial markets..