I really like tech. I try to avoid "crazes" (though I had to take a punt with weed being in Canada). Tech is here and its here to stay.
Honestly man, when it comes to individual stocks choose company or sectors that you enjoy. I invest in Activision/EA because I like playing video games. I invest in Amazon because I use it daily and they have cornered the market big time.
For things I dont know much about or care to pay to much attention but think it's a savvy industry/sector to invest in, I'll just go with a low cost ETF.