At this time, is it possible for a beginner to learn bitcoin,
Learning is possible at anytime that you are ready and prepared to commit to it. The first stage of learning is usually the most difficult time, where you are still trying to pick up understanding about what a subject talks about. When you pass that beginners stage, it becomes easier from there to continue to update your knowledge.
Learning something newly can be discouraging especially when it is difficult to grasp, but if you persist and do not get discouraged, you will finally have understanding.
Do not rush or hurry the learning process, give yourself enough time to read and understand.
I do agree that it would be feeling terrible at first, because you would feel like you are not going to understand anything at all. But when the time comes you are going to learn it very well and it won't become a problem.
I have to say that most people give up on the hardest part, which is the first curve, if you can go beyond that, you can be better than most people in a subject. It doesn't matter what the topic is, if you work 250+ hours on it, which is a lot and sounds like too much but that's only less than an hour a day for a year, then you would be better than 99% of the world on that topic. Just do that, focus, don't give up, and you would be great.