One hint I can give you is that joining groups seemed to be the thing that really turned my news feed into something else. I've joined groups related to game programming, music production, Arduino and a bunch of others related to local music gigs (plus some support groups that I feel I can contribute to) and now there's actually a lot of interesting (and pleasantly technical) stuff in my feed. The other effect this had is that the ads I see are a lot better as well.