Hello guys, I just wanna ask what are benefits of group here, what can I do in group that I can't when I am not in group.
This group on lichess? Not much, to be fair. You get to participated in Team Battles and enjoy that atmosphere, but everything mostly happens on Discord.
On Discord, the standard chess talk is relatively advanced. Sometimes some beginner questions are answered. On the other hand, the variant communities are very beginner-friendly and always willing to help new faces.