Move the magnifying glass around one bit at a time. Make sure to let go of it every now and then, or else you won't hear the popping sound when you've found something. When you hear this sound, press space and a question will pop up asking whether you want to put it in your inventory or not. Make sure to type yes, if you type no, it may end up breaking the game. In the cutscene, press space to move onto the next scene. That is all you need to know for now, have fun!
Also, if you wish to do a replay, press the green flag twice. It will just skip to the cutscene if you only press it once. This game is in Beta, but as soon as all the bugs are gone and it's improved, the commenting will be turned off.