This is what I think the best approach to send a message that they should learn about it. Share your opinion/experience with such activities.
Gifting Books as a gift on a special occasion is a good introductory initiative towards Bitcoin and Cryptocurrency awareness. But have to take feedback about it. Because Bengali is the regional language, what is mentioned in that book is a must to know. The writer's views or experiences might be personal.
Bitcoin and cryptocurrencies are hard to understand just by reading. It needs practical experience. Personal use of Bitcoin and other Cryptocurrencies with its environment can give more confidence and mobility in the current crypto industry. Including all safety and security are the most important preventive majors for crypto assets.