Try to be part of that said ICOs Telegram group or other social platforms. See if the project owners are willing to sell to you before the ICO goes live.
I hardly believe the credibility of the telegram Group, let alone it when it comes to investment advice. Sometimes group owners work or are affiliated with certain projects for profit. As a result, some of the new projects appear to be overlooked, and even included in embedded messages without in-depth and honest reviews from their own point of view.