Figure out an area people are making money at or trying to.
Learn a method.
Do the method and as you do it create an "s.o.p." (standard operating procedure). This will contain all the things you need to do to accomplish each task and nothing more, nothing less.
Once you have the S.O.P look on fiverr for what people are paying per output.
Follow the S.O.P. and time yourself and measure your output per hour. I would do 25minutes worth and consider 2 25 minute sessions in an hour with 5minute breaks or 10m of distraction per hour a good metric.
Based on your dollar per hour output, you will then begin training a virtual assistant in the phillipeans or something.
There are other methods. You might just buy links using just another panel and sell them on fiverr for instance.
But I would aim for a niche make money online area you want to follow. The reason being you can get better price per hour if you can hire someone in bulk and sell them on the idea they won't have to spend time looking for gigs and will always have work. When you don't have fiverr gigs coming in you have them build your business. When they do you have them build someone elses and get paid more per hour than their work is worth due to the system you built.
That is my idea with it anyways. Some may have different ideas.