Okay, the help topic has another name than the quest" Link´s first journey". That explain why i couldn´t find it. It´s always a good idea to make a link to the quest in the help thread. It´s today more than 780 quests here 
Anyway, from level 2, go L L U U U L U. You should be on a screen with an arrow made of boulders. Simply climb the wall where the arrow point and there is level 3. You open up with arrows ( not bombs ). Hope this help.
Edited by Lukaz, 03 January 2023 - 01:37 PM.
