As far as i know these "trading chats" are nothing but pump and dump groups that try to screw it's members over and over. If it's not that, you'll find yourself in a group full of scams and ICO advertisements. If you ask me you'll be better off reading trading tips on these forums or on reddit.

You just need to be more specific on what you want to know and post the topic. If it makes sense then people with sense will reply and converse with you.