You make use of all the factors that may possibly play a role in Bitcoin's price. You can look at the news surrounding Bitcoin or crypto in general. In fact, dig deeper and know what's about to be broadcast. The price begins to get affected while news are still rumors. You may take a closer look at the fundamentals as welll. You may also do some technical analyses using various tools to learn how to make some prediction guides and patterns. But all in all, brace yourself for constant surprises.