Nothing happens for free. In any case, you invest something, be it money or your time, which is much more valuable than money. There are no 100% guarantees anywhere, this must be understood.
If you are promised the golden mountains with a guarantee of return - think about it. Why would anyone write a guide on how to earn $ 1000-2000 $ while revealing the secrets of their strategies for free.
This does not happen.
Your guide, by the way, also does not say anything specific regarding earnings, dead figures which tomorrow may no longer reflect today's reality.
Some still do it for free but mostly if it's for their families or relatives, but sharing secrets for others is not guaranteed that will really be profitable or be the same on how it works on them. All we need is to research, study and create conclusions that we think we can stand still and will not regret in the end in any crypto activities. Don't focus on free, it's OK to put effort and some capital. It's more worth it.