Investing without enough knowledge can be risky especially if your budget is small. However, I believe that everyone must start somewhere, even if it is with little money and knowledge.
The most important thing is ready to learn and grow. Some people learn best by experience, even if they start little and make mistakes. Of course, losses can happen, but they can also teach important lessons that books or others may not fully explain well. However, not everyone has the time or money to wait until they become an expert before starting, sometimes starting small helps you stay careful and learn faster, as long as the person is open to ideas, not greedy, and willing to keep learning, they can still make something out of it, no matter how small they start.
I believe that mindset is important, if you are not emotionally strong, a small price change can discourage you, which is why patience, learning, and emotional control must all be together in the investment journey.
It's not very difficult to get basic details of Bitcoin as they are readily available on internet. If one has acquired basic understanding of Bitcoin then their is no harm in getting started with small amount. Because in the start we all do mistakes that results in monetary loss and these mistakes helps us in understanding how to invest in Bitcoin. As a newbie if we get ourselves familiar with DCA then we can save us from initial mistakes and monetary loses. The only thing difficult is getting started and getting on the track, after that it's a smooth sailing.