I'm new here. Can anyone help me understand how to save the project and an image? Thanks

By using the Button clearly labeled "Save" in the Home menu and the camera button respectively.

i had a question i hit the camera icon i hear the photo sound but on my mac i can not find the save image the program came on a zip and when unziped it was olnly the application si do i need to create a folder? better yet what is the file saved as so i can search  my computer thank you