sometimes learning how to trade from the many tutorials available at various sources does not fully make us proficient in trading, because there is no strategy that can always produce profits in trading other than learning from the experience we have done, if in the past had experienced losses, then now is the time to start correcting the mistakes we have made in the past
For me it is useful for as long as you are applying it to yourself, but if you are reading and watching tutorials everyday thinking you will absorb it and you can apply it easily, it won't work. So you should apply it everyday until you have come up with your own strategy or else you are just reading books that you don't understand.
It can also help but also from getting updated from news can help you to grow in trading because you can determine the flow of market by using the popular news site which can affect the price in the market.