U can join the Red Cross Society of Adama Branch they will give certificates for becoming a member n also first aid certificate

https://maps.app.goo.gl/NEJ2T9scdbTXy4fp6 This is their address go n talk to the admins they will tell u to file in an application letter n a copy of ur ID n ask u y u came just tell them that u came in to do voluntary services mnamn ngr then then just beqa go to them every weekend n then eventually they will add u to their group on TG to notify u when there's work