Where is the sub thread that discuses ICO, and how to anylise ICO and learn from experienced ICO Investor?
You can post to the ANN thread of those ICO's that you want to analyze and start a discussion there, otherwise you can discuss it on Service Discussion for altcoins.
There's a Service Discussion for bitcoin so that's another separate section that I'm talking.
I also see some of this type of discussion on the Speculations for altcoins where people are discussing with the certain coins that they are interested.