Rather than to pay someone to teach you, you can learn trading from Internet which is free.
Yes, there are resource materials on the internet to learn from but that feel isn't the same as when one is mentored. Mentorship is very crucial for every beginner in any field of their choosing. Don't look at the monetary aspect of it or what you're going to pay to learn directly from someone who had done all that and gone through the process. I'm referring to real traders and not some salesmen masquerading as traders who are only out to sell trading manuals and all that.
Besides, there are traders who also offer free mentorship classes. Not every classes have monetary commitments attached to them. I didn't have a mentor when I started trading (even till now) but with what I've learned today, I would rather have a mentor if I were to start all over again. It saves one all the years of groping in the dark. It saves one time and enables one reach one's goal quickly. When you stand on the shoulders of giants you see very far. That's what mentorship does to one.