If you want to save a picture, video, webpage, even a text message, you can keep them in your Favorites. Just long-tap on something you want to save and choose "Favorite". 

To find it later, choose "Favorites" from the "Me" tab. 

Make your Favorites easier to search and sort through by adding tags. Find the item you want to tag in the list, slide left, and tap the tag button. When you’re finished, tap "Done" in the right. 

To delete an item from your favorites, swipe left on it and tap the red trash button.