I want to add adsense ads to one of my WP sites but I dont want the ads on every post. only on selected ones and different size ads in relation to the size of the article . Is there such a plugin that does all this?
No such plugin in not available. You have to do it manually. Put code the adsense code in the choice of your post . You want to display ads.
never tried just adding the code to the posts , as it wont be loads of pages it must be easier to do it that way. Thank you