IMO it is not reasonable to invest during a peak. A pump is often followed by a correction and that's when you can consider an investment. But keep in mind that you can lose everything.
This is often what people say but can you put more details for beginners to better understand when is peak?
And my last advice would be to avoid trading at all costs if you are a beginner. It takes skills and experience.
How can someone gain experience and get out of the "beginner" status if he/she is going to avoid trading at all cost? reading alone won't help you become an experienced trader.