How to make 3000 visitors for your site/blog?

I would start with free traffic first if your budget is limited, backlinks backlinks backlinks

I would also recommending to start first with free traffic, like writing articles to article directories, making some video for video directories and most important SEO.

SEO is good but it can be slow for a new website. You would need google and other leading search engines to crawl and index your website good first. So first you should just do good SEO for your website and then go for back links which you can get by article submission, directory submission, etc. Directory submission wont give you any good traffic but good back links. Then exchange link with relevant websites and spend some money in low cost flat rate advertising.

If you are promoting that website, or a CPA offer, why would you put adsense on it, also? Do you really want to distract your users from your primary offer?

I'd RUN VERY FAST away from trying to promote a web hosting company using Adwords if that is what you are talking about. You better REALLY know what you are doing before you go after hosting services with adwords.

If I wanted to promote a web hosting service, I'd be writing HORROR stories about hosting and submitting the stories to article directories and on a blog, horror forum posts, and a few horror stories on YouTube. Then I'd recommend the one I'm using now.

If you don't know any horror stories, just ask for stories here on the warrior forum about the WORST hosting experience people have had.

Are you curious why I would be writing about the BAD, HORRIBLE, and AWFUL experiences?

#1 - You can keep a readers interest longer.

#2 - You reduce the number of people writing similar stories. Everyone is "recommending", "reviewing" and "praising" hosting companies to sell offers.

People in forums, yahoo answers, blog comments, etc.. are going to read about the "Bad Companies" they like train wrecks.

3000 visitors...over how long of period of time? You should be able to do that through free methods in just a few days if you work at it.