It's simplier than you think and don't try to over complicate Bitcoin learning process as it can be a big mental barrier for guests to start their learnings. It will negatively affect Bitcoin adoption and as Bitcoiners, I believe we all want to go forwards with better adoption as it is helpful for Bitcoin demand, then price will be beneficially risen.

People as guests can start to learn very basics of Bitcoin that is enough for their start and even enough for their Bitcoin investment, storage, backup, and recovery. Only if they want to understand more, deeper things, they can have deep dive learning but it's not mandatory.

Some resources to learn.
The bullish case for Bitcoin.
Learn me a Bitcoin.
Mastering Bitcoin.
Bitcoin information and resources.