because starting may not be a problem but holding may be a problem, because you are to hold bitcoin for a long period of time 4 to 10 years or more.
what's too complex to learn about holding your Bitcoin? it is not even about learning a thing but just deciding that you are investing for the long term and that's it. unlike trading that if you do a wrong analysis will yield a loss, you don't need all that if you aim to invest in Bitcoin and that is the reason why there is not a lot to learn before getting started in Bitcoin investment. I can bet that a novice can learn about Bitcoin investment in less than an hour and get started but it will take a lot of you are considering any form of trading.
there's not much to learn with bitcoin investment, just learn the basics, get started and the rest is just your ability to manage your emotions so you can stay invested for the long term.
Holding Bitcoin is challenging actually since you'll have to discipline yourself not to tamper with your portfolio and keep Striving to get better with your cashflow management abilities in order to continue accumulating to reach your accumulation target and also building your backup funds to serve as a lifeline for your holdings.
Tampering with your holdings is always evident of lack of funds, so if you build your emergency fund and variances of backup funds and replenish them as soon as any gets depleted, you can actually go for seamless long-term holding.