The time you invest to make any significant amount of money is the same amount of time it takes to build a course or other offerings. If you want to make good money with ads (in the thousands), then you need to get 100s of thousands or millions of pageviews a month. This takes time and in that time you could just as easily build up your mailing list, create an infoproduct and make thousands whenever you want.
Be professional. When you submit a résumé, don’t type it in ALL CAPS and please don’t avoid the caps lock like the plague. Know how to use it without looking incompetent. Write in complete sentences with proper grammar. Of course, there will be exceptions, but even with the exceptions, you must keep it professional. You’re building their view of you.
Also, I have a theory that a contact page without a form cuts down on time-wasting emails. That’s because a lot of people will see a form and use it immediately before reading the information on my contact page. By providing my email address at the end of my contact page, I’m hoping their question(s) will be answered before they get there, thus saving us both time in an email exchange.
Content marketing can be done with articles on sites like Medium.com or Scribd.com, it can be done by answering questions on Reddit or Quora, and it can be done with videos on YouTube or Vimeo, along with a variety of other means. The point is that all of the content has to be useful, period. Don't try to do the least amount of work for the greatest return. You need to do the exact opposite if you want to succeed.
Perhaps the most popular network for placing these types of ads is Google AdSense. With this program, you do not need to be in direct contact with advertisers; you simply place the banner on your site, Google chooses ads relevant to your content, and your viewers click on the ads. There are countless similar programs available if you find that AdSense doesn’t work for you, such as Chitika, Infolinks, and Media.net.