Мне как-то ответил один довольно сильный дизайнер (единственный ответ из десятка именитых дизов, к которым я прикалупался с похожим вопросом):
Hey Eugen,
Well, if you ask me the best method is this:
Forgot those courses and educational resources.
Just work like hell, and don't want to be like your idols.
Be better.
My advice in five words is this:
Practice, practice, practice, practice, practice.
( That was the way how I improved my skills. )
Find projects you like, projects what inspire you, and study them.
The beauty is in the details. Check out the ratio system, the spacing.
Then re-create those with an alternative approach.
Use those projects as a starting point, but change the layout,
use different images, make them better.
Create a site for your favorite movie, band, artist, product, etc.
If you like an app but it is ugly as hell, make your own concept.
Proactivity is important. Don't wait for others permissions.
Just do it.
Cheers!
Вот как-то так)))) Ну и Тафти, Крут, Раскин, Чихольд в помощь. У бюро горбунова толковые книженции есть