First Bitcoin investment is not a business is an investment and is usually for long-term, if you take Bitcoin accumulation as your business then you are no longer investing rather you are trading it , and before you can think of taken profit or depending on your Bitcoin stash is when you have gotten enough stash ( having a good amount of Bitcoin in your secure wallet ) .
The truth
is bitcoin is not supposed to taking as business, rather bitcoin should be taking as investment for long term, why because there is a very big difference between investing and business, investing is more of allocating funds or resources to assets which as bitcoin, stocks bonds, real estate and so on, while business is more of buying, selling and exchanging goods and services. So if you check it well business is more of trading, while investing more of allocating funds to assets, so people should stop seeing bitcoin as business and start seeing it as investment.
In Bitcoin investment going for complex knowledge is not necessary to start , you just need just the simple basic knowledge then you are good to go , just know how to execute proper planning and know how to manage resources. Maybe when you have started accumulating Bitcoin then you can start going further to gain more knowledge that will help you manage your Bitcoin investment properly and Same time understand the purpose of Bitcoin as a digital currency too.
you are correct you don't need complex knowledge to get started with bitcoin, with basic knowledge about bitcoin you are good to go. Just know how to sign up in an exchange, know how to buy bitcoin and know how to store and security your bitcoin's, you are good to go with bitcoin. Then from there you can learn learning and gaining more knowledge about bitcoin, because waiting to learn and gain complex knowledge about bitcoin can delay your investment journey so get started and learn inside the system and not outside the system.