I'd say through investment. People may engage to mining, bounty participation, trading and the likes but the easiest way I think for a person to get into cryptos is to simply invest into it. But ofcourse reading about it, atleast the fundamentals or keyterms, is more advisable. Then if he would want to dig for more, interactions with people industry is the second step, I guess.
Being a forum member on bitcointalk who contributes their experience of using bitcoin, helps newbies to answer any questions or problems they have with a bitcoin service, and discuss about services they use to help improve the quality of it overall,,, this is easiest because you speak only from experience:)
Good one. But cryptos i cluding Bitcoin will more likely be heard on things related to profit such that investing into it will give "assured" profit. It is not really easy money but that's more likely how cryptos will be introduced to someone nowadays due to news. This forum is a good thing but not all people are aware of this site.