However, to the victors go the spoils. Those that start a blog and don't actually quit, continuing to push forward, make tremendous amounts of income over time. Not overnight. Nothing good comes quickly. You'll have to put in the work. But this is by far one of the best ways that you can make money online as long as you understand what you're doing.
Working with advertising networks isn’t your only option when it comes to selling ads. If you end up with enough traffic, advertisers may come directly to you and ask you to place their ad on your site. You can also contact advertisers yourself. The biggest difference from the above mentioned option is that there is no middle man, which means you can set your own ad rates.