As a new investor I can say that if you want to hold bitcoins, you should hold bitcoin in DCA method.
Holding of bitcoin does not require any method. The DCA is not a method of holding bitcoin rather it is a method of buying bitcoin at a certain interval on a regular basis.
As a new investor I don't think it requires much knowledge.
(Though the saying goes that knowledge is king)
But once you go to the market, you can learn all kinds of things by yourself.
Yes as a newbie all you need is the basic knowledge of knowing how to set up your wallet and how to buy bitcoin from exchanges both Dex and Cex and knowing who to withdraw your bitcoin to your wallet. Also to know that you are not to keep your coin in an exchange for long because it's dangerous.
DCA is a good strategy for holding Bitcoin.DCA means buying and holding a fixed amount of bitcoins every week or every month. You invest 1/3 of your income over a period of time. You cannot hold on to your entire income or invest too much at once. At any one of your perils you feel like withdrawing this full amount.Which will go against your dream of holding bitcoin.
Once again DCA is not strategy of holding bitcoin, It is a strategy of buying Bitcoin. Another mistake you are making about DCA is were you are saying, buying a fixed amount of bitcoin every week or month. Instead of fixed amount of bitcoin, it is a fixed amount of money.
If you say fixed amount of bitcoin it might be difficult to achieve it, as you will be going against your budget to buy when the price of bitcoin is high in the market. But with fixed amount of money, you can always stay in your budget and buy irrespective of bitcoin price whenever you want to buy.
I agree with you that buying a fixed amount of bitcoin will ruin his bitcoin accumulation plan because if he sticks with buying a fixed amount of bitcoin weekly or monthly, he will end up not making a provision for emergency funds. For instance, If he bought his first bitcoin of 0.003 BTC at $42700 and wants to buy another bitcoin with a fixed amount of 0.003 BTC and the bitcoin price is at $50k, he will have to pay more money to accumulate the 0.003 BTC, which will make him use most of his weekly or monthly salary to accumulate the fixed amount of bitcoin, and he will depend on his bitcoin investment to settle his financial needs because the strategy he adopted to accumulate bitcoin did not allow him to keep an emergence fund. I see this as gambling because he might miss out on owning a bitcoin.