Where to take knowledge of the selling sites?

Hi all, interested in whether there is some Russian professional sites that tell about the chips Internet advertising? How to create a selling site, something to do accents? Trends in the U.S. and around the world? Thank you all in advance for the help!)
July 4th 19 at 22:44
1 answer
July 4th 19 at 22:46
only you, brother, experience and life

it is important to learn to look at the competition, it is also science

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