I have a programming tutorial on my website. I want only webhost type ads to display in the adsense bar. Would you guys know how to do this?
All you can really do is reword your content (and don't forget <h1> tags) with keywords that relate to webhosting. You can't really select the ads, they are chosen according for your content.
you can write a short article about web hosting and put it on every site and use section targeting but I'm not very sure it is ok with TOS since it is manipulation, trying to get ads which are not relevant with your actual page content