Shitcoins are useless and don't even deserve investing in because they are more like gamble and beginners don't need to distract themselves, talk more of DCAing on shitcoins. You don't need to look for any coin with big market capital, just invest in only bitcoin and DCA regularly with the amount that would be at ease with you after you have taken care of your monthly expenses and have made available your emergency funds.
Given that some shitcoin has a large market capitalization, why would someone find himself DCAing on shitcoin? Are they intending to benefit handsomely from shitcoin that is unable to withstand the bear market that drives the majority of them out of the crypto space? It is regrettable that some investors still think investing in shitcoin is a better option than bitcoin due to its high cost and lack of short-term profit potential.