Reasons people are getting ban from Adwords..

Hello guys,
I saw that many people are getting ban from adwords program, this is because of the following reasons--
They don't have proper knowledge of Keywords,
They don't read their terms and policies(like before the owner of 8,000$ adsense earner go banned because he put GOOGLE in his campaign),
They don't have patience and make more and more mistakes..

My suggestion is to before signing up with Adwords you should try market samurai as a trial and practice your researching..

So what do you guys think? Is that better option to stay away from getting ban from Adsense??