orgs feu mnl freshman

hello po! incoming 1st year MT. may nakita po ako na orgs na nag open na ng application nila to join and depts for their respective councils, i have no proper knowledge sa mga orgs ng feu and dk where i should join and when?? will i have more insight and have a chance to apply once classes start especially sa tatak tams? or ito talaga ‘yung oras allocated to join extracurriculars im very lost and overthinking ✌🏻send help