Well.. advanced CPA is not easy my friend.
It requires tools, budget and skills.
For example you will need a tracker as you need to track
everything. Why? Because you need to do a lot of split-testing, collecting demographic data, CTR of CTA buttons, headlines etc.
A descent tracker will already cost you average about $100 a month.
You will need a fast VPS which cost average around $50 month.
You need at least $500 for 1 campaign to buy traffic/data and analyze it.
And preferably a spy tool like adplexity which will cost you after an afflink from somewhere $150 a month.
And after all of those you still have no guarantee you will be successful.
So yeah, pretty steep learning curve.
For simple things you can click the bottom link in my signature or go to the make money section and you will see my post pinned.
Those methods everyone can do, don't require a lot of money but do require time and consistency.