Just a Grandma

I followed a you tube video that told me to use paint bucket and set color to transparent to make the background disappear. I reset the color to black. The bucket then paints whatever I click on black. I just want to turn the bucket tool off. Never mind anyway, I just started over.

Hello, I'm making a book cover in Paint. This is my second cover. The first one went great but that was 8 months ago. For this cover, I used The tools, specifically paint bucket to remove the background on a silhouette I'm putting on a photo. It went pretty well but now the bucket tool won't go away. I can't seem to shut it off. I can't do anything else because the bucket disappears everything I click on! I'm sure it's a simple fix. Can someone help? Thanks, Grandma