IMHO, the expansion of crypto is fundamentally hindered by the following 3 problems:

• Confusion on technical terms example: blockchain, SHA256, node.
• The lack of a simple way for people to get into crypto. Only Coinbase exists for now.
• The lack of a secure and easy way for users to secure their crypto while still keeping it accessible.

I'm addressing the first problem with my website, Decryptionary.com where I define 200+ words including the 3 mentioned earlier.

I also wrote walkthroughs at https://decryptionary.com/what-is-cryptocurrency/ These walkthroughs help people understand crypto and participate in them without investment advice.