There came a day in my working place last weekend while we are less busy in the shop where I work because of the love I have for bitcoin I have to introduced it to my junior workers in the shop where I work, while telling them about bitcoin club an crypto space they where so happy an interested in the topic I told them how I feel here when ever I login to the forum,how I see so many critics an encouraging in the forum they where so happy an excited I now go on an told them how I use my salary to invest on bitcoin they where so surprise,I now proceed and tell them how we are coming up with a welcome development how the supermarket will soon start accepting bitcoin as means of exchange because of the cashless policy in the country an scarcity of currency, they where all excited to hear that from me as their manager in the supermarket,they even go ahead an aske some questions on how they Can join the forum,what are the criteria to join the forum, how to invest in bitcoin,some even ask how to trade, some even ask how can someone be financial independent,or succeed through this forum, I told them is not easy to be here but u can be here also if only u are ready to lean from the forum told about some authors to read that can boost their knowledge.please I need you advice as a new beginner what to teach them as co workers.
If we take OP's perspective positive then he's clearly saying that he introduced the Bitcoin to his team mates last weekend, and that's amazing that those work mates found Bitcoin interesting. It's really awesome that the OP has told his team mates about his journey of using Bitcoin and investing his salary into it, that shows that he's truly interested in Bitcoin.
In some of his words he's trying to introduce them to this forum, which is really a genuine step towards learning of Bitcoin as this forum is filled with stuff related to Bitcoin. I'm very happy to see that people are adopting Bitcoin as a payment system in their work place.
Back to Op, if you really want to teach them about Bitcoin then this forum is the most reliable source of information for their learning. Other than this forum, you may should encourage them to read the white paper of Bitcoin that's freely available at Bitcoin.org, other than these sources you should also tell them to check sites like Coinmarketcap and Coingecko if they want to see charts of Bitcoin and other details about it.
The above mentioned sources are most reliable and they are beginner friendly, you should also tell them to learn about Blockchain and Bitcoin as much as possible from these sources before investing their money into it. I hope these resources should be enough for them to learn the basics of Blockchain and Bitcoin.