Ask: Know any good community site about online investment?

I'm looking for HN-like sites or conventional forum that gives us reliable advices on getting up investing online and reviews of online brokers available. I found a few, but most of them flooded with spammy and scam articles. Please suggest a site or an online broker (with review if possible). I know that it may not be relevant to ask this kind of question here, but I'm not very comprehensive in internet and HN is the only site that I think has great community and reliable contents.

on a side note: I've been a lurker here for long time, and don't see the search button. Is there something I missed?