How much you should invest in cryptocurrency as a beginner depends on your financial status. If your financial condition is good then you will have one type of amount and if your financial condition is bad then it will be another type. Because according to the financial status of a person, his ability to take losses depends. But one piece of advice I would give to the op is that everyone be it a beginner or a professional should invest in cryptocurrencies as per his/her ability because crypto is profitable without efforts but on the other hand it is high risk. So just as a person can profit a large amount quickly from here, he can also lose a very large amount quickly.
That's right and the amount you should invest really depends on your personal financial situation, risk tolerance and your own investment goals. However, a general rule that you should apply so you have no regrets is to only invest what you can afford to lose, as the cryptocurrency market can be very volatile which can lead to sudden big profits and big losses.
Do it to the best of your ability once you've prioritized your essential needs. If you do it periodically when you have extra cash to accumulate, and in the long term you will definitely get a good return if you have the patience and firm belief to wait for the right time to sell it.