There's no best way. Usually people talk about their own experience, or, when the price is growing and Bitcoin reaches the news, then those news can be taken into discussions.
But if you have no experience in Bitcoin, you may get to be perceived as somebody who want to earn from others' work (eg referrals) and maybe that's why you're approaching them.
Also bitcoin is not the best investment for everybody and if you talk about bitcoin as investment you may be perceived in a bad light. Even more, if you convince people buy bitcoin and then they panic sell at a loss, they may try to hold you responsible. It's not an easy task.

On the other hand, the technical parts of bitcoin are superb for the tech inclined. Or Bitcoin can be a very easy way to pay or be paid or simply send money abroad. If you go for technical details or for bitcoin-as-currency and mostly warn about the risks of bitcoin-as-investment, you may have better chances.

Or, you can simply pay with bitcoin for this or that jobs, so people do start finding it useful.