"Generally, crypto trading signals are transmitted through Telegram groups or channels. These signals are specific to specific crypto exchanges, and you must have an account on that exchange to trade them. You can find many free and paid versions of these services. Some of the premium versions have more exclusive signals and a HODL portfolio, which allows you to hold your coins indefinitely. Additionally, many of these platforms have a risk calculator you can use to determine your risk level before you start trading.
Different crypto trading signals have different strengths and weaknesses. Choosing the best one for you will depend on your goals and how much you're willing to invest. Some signals are scams and pump and dump schemes, and you shouldn't trust anyone who claims to be an expert