What r the best teachers on unacademy, about Arambh 2026

Guys I am in class 12 and confused which batch or teachers should I follow on Unacademy.( specially for chemistry)

Also are new batches gonna launch on 7 march in arambh event?

Literally i m very confused.

Also, my chem is ruined completely so what are the basic chapters should i do before 12, specially how much part of GOC? for jee