The Creative Real Estate (CRE) Online bulletin board is a good reference for real estate investors.  You'll see all sorts of discussions there - relevant and irreverent.  It's a fun place to hang out, and every now and then I get a new point of view that makes me look at things differently.  But in all things in life you have to be a discriminating consumer of information - especially the unfiltered stuff that you get on a public online forum. 

Also, be aware that the website sells courses (many costing hundreds of dollars) which I categorically don't recommend - so don't take this post as an endorsement of anything that they're selling.  But make up your own mind, and I'd be interested in any feedback that anyone might have.