Personally I will not prefer such kind of signal groups as because most of them are scammer they just put fake old profit images and claim that they and all the premium group user won this but in reality thier is nothing, also they add High number of fake user and views to make his group look like geniuen, All of these fake things they do just to attract user and stole thier funds,
So the best things is to go out search by own and get much possible knowledge which will help you to do your own technical Analysis, if by chance you book some loses by your own TA then in a exchange it will provide you a lesson as well as experience,
In last you can join such free signal group to collect just knwoledge not more than this..