I purchased my first home when I was 19.
My first course and training I ever purchased? I saved my money from my paper route and department store clerk at Montgomery wards and bought Carlton Sheets "No Money Down" program from the infomercials on TV.
Yes, took me 3 years to finally implement, but that little action changed my life forever. I still have the boxes of cassettes and VHS's in my parents garage to this day. Wont get rid of them.
From there I could not get enough. I took every course, training, seminar... read every book on the topic. To learn everything I could about the business.
Fortunately my grandmother instilled in me a love for books at a very young age with her old collection of mystery novels. So I LIVED at the library!
Yes, I was (am) a traditional nerd. While everyone was out partying in my teens, I was working part time, educating myself full time reading.
Mid twenties I got my real estate License and built a small investment group of 9 members and pooled together just under a million in capital where we bought, and sold several dozen properties over the years before marriage, babies, travel and new adventures sent us in different directions.
I soon found it more beneficial to let my license go and go full time investing.... and have never looked back since.