Both.

When it comes to technology, I find books to be a secondary citizen. If I look at things I know and use in my day job. Things like stack overflow, blog posts and reading man pages have been my primary knowledge sources.

But off late, I've been reading books and mostly enjoying the titles I've read. But the biggest problem for me is finding my next book.

Amazon mostly recommends titles very closely related to what I've purchased, and I haven't had much success with goodreads lists. So I'm curious how HN users find their next book.