You need to take action and learn from the mistakes
Knowledge come only from experince.

You can read books listen all the gurus, but it's nothing compared with your own experince.
Instead of reading the books or listening the gurus learn the basics and start action make some moves because you will need to be ready to make mistakes don't take this emotionally be with mindset that you gona have nice long 3 years of working with something make mistakes don't think about them too much just make notes what went wrong and move on dont make same mistake try new way.
At the end you will have a lot experince base to see what did worked and what did not worked out.

Do not think you gona hit success with first shot just swich off all your emotions do it fast make notes fast don't get in bad mood because something did not worked
Stupid person will get smarter only with actions smart person who think too much will stay only with knowledge what all ready have.
Instead of thinking just make moves and you learn on the way the knowledge mixed with experince is what makes CEO-s that's why no matter how good is your degree of something your new work place think you have value only If you have real experinces.

Think something that experinces are like gift once you have them even bad ones your value will increase therefor your personal market value will be also higher.

Don't be stucked with bad mood If you try something and it's not working you have to be mindset that you gona make 100 mistakes yes you will make it that's normal.
People who take failures too hard will just overstress themselfes and that's why they slow down their success.