Investing in cryptocurrencies is in itself a high-risk, high-reward endeavour and hence should be approached with enough knowledge and caution although sometimes one can be unfortunate regardless of the amount of knowledge gained due to the upturn of events in the crypto market. In purchasing crypto currency depending on your goals (short-term term or long-term), for short-term that is buying when the market is low and selling when it later rises the risk involved is that the price may not rebound and hence continue to drop or remain stagnant thereby encountering losses while for long-term goal that is buying and holding regardless of the market trend the risk involved is that if the market experiences a prolonged downturn the value of the crypto might decrease significantly. So in all there is risk in cryptocurrency investments whether long-term or short-term.
Are you talking about Bitcoin alone or including altcoins?
First, you don't need much knowledge to get started on Bitcoin investment, because as long as you continue to invest daily or weekly with the DCA method, you will begin to gain more knowledge about Bitcoin investment.
However, as a newbie to Bitcoin investment, you need to use the DCA method to invest, and you also need to invest for the long term before you will be able to make a good profit. I would not advise you to invest in altcoins because right now, I don't even know any altcoins that are worth investing in and am not into them. Actually, even if you want to go for it, you can't invest for a long term because you will definitely be at a loss in no time.
Moreover, you also need to understand that the level of risk in altcoin investment is more than in Bitcoin investment. And you can't compare Bitcoin investment with altcoins, and if you say the word crypto, you include Bitcoin, so you have to understand that Bitcoin has more potential, and it can't be like altcoins.