I'll be setting up a new site in the near future and I won't be selling anything on it - it will be a lot of "self-improvement" info that people will reference. This is really a passion of mine - so the info will not be from any sources, just things I've learned over the years. All in all - this will be classified as an informational site. However, I will have adsense on this site - just wondering if anyone has an informational site w/ just adsense on it and how well did you do on it as far as CTR. I can see people who write reviews on products and they put adsense on their site and get a high CTR - but I haven't heard anything about the ppl that has a mega-site that is pure info and them getting a high CTR w/ adsense.
Remember that CTR is just the percentage of people clicking. A site that gets 500 impressions and has a CTR of 10% probably won't do as well as a site that gets 20,000 impressions and has a CTR of only 2% A decent site with unique information that you can provide just might become an authority site with quite a decent bit of traffic. That could easily make up for a lower CTR.
You're going to have a great site because "content is king", it sounds like you're have a very unique site with lots of content you're passionate about. Looks like a winning combination.
For the type you are talking about you can mix adsense and banner ads. This will increase the revenue a lot. Just experiment and you might find some great way of making money. All the best!