What was your main obstacle to understand or use blockchain/Crypo in your firsts days?

Hi, a friend and I was start to write some articles to introduce people in blockchain and would like to know how was yours experience in the very beginning days? What was yours obstacle and what did you wish someone explained before in those days?

The purpose of doing this is to try to adapt the writes to the topics were the people have more difficult.

Doesn't matter if you are expert or beginner right now. We would like to hear you even if this is your first day reading topics and dive into this world.