Short Answer 
Leonardo da Vinci succeeded in his self-education through self-study and practical experience, overcoming challenges posed by limited resources and societal barriers. His curiosity and exceptional observational skills allowed him to expand his knowledge despite the lack of formal education and recognition due to his modest background.
Step 1: Self-Education and Learning
Leonardo da Vinci lacked a formal education in Latin, which was typical for scholars at the time. Instead, he took initiative to become a well-rounded thinker by engaging in self-study and obtaining practical experience across various fields. Through his curiosity, he explored disciplines such as anatomy, engineering, and art.
Step 2: Overcoming Resource Limitations
During the Renaissance, written materials were not readily available, presenting a significant challenge for Leonardo. Despite the limited access to books and references, he relied on his remarkable observation skills and conducted practical experiments. This hands-on approach allowed him to expand his knowledge beyond what was documented.
Step 3: Navigating Social Barriers
Came from a modest background that posed social challenges in gaining recognition. Leonardo had to face societal barriers to acceptance in elite circles of artists and scholars. However, his extraordinary talent and unwavering perseverance eventually won him the admiration of many influential individuals.