The phrase 'earning big money' does not really mean that much because it means different things to different people.
Nevertheless there are proven online strategies that exist that will make you a sizable income IF you put the work in.
There is no quick way to online riches, sure you can make money in a short space of time however strategies like this tend to be short lived and you will fall back in the SERPS (search engine rankings) eventually so such processes are false economies really.
What you are better off doing, if you are really serious about making money online for the long term, is using a strategy that will focus on proper keyword selection based on lack of competition.
This will ensure that you will have a realistic chance of getting on the first page of the search engines for your keyword selection.
From this the strategy should have a link building process built in that isolates good, well ranked sites to post your links back to.
This link building strategy will be key to the longevity of your sites.
You will also need a proven timeline that you can also follow so that you do not build your links too aggressively and run the risk of being sand boxed by the main search engines and lose valuable time in the process.
A good strategy should also be scalable so that you can put more hours in if you want to create more sites and build your income quicker.
Last but not least you do not want to be paying an arm and a leg for your strategy, associated tools and mentorship as this means you have a large amount of sunk capital early on in the process that you will have to recover before you have even broke even.
If a proven process has these key elements built in to them it will steer you in the right direction and also educate you so that you will be able to control your own destiny through your own though processes and intelligence.
The future will be in your own hands.