Picasa is a free photo management application that offers several ways to view photos and photo albums. It can gather photos from multiple folder locations for faster browsing using the scroll bar. You can also play a slideshow which shows photos one by one with transition effects. Some of Picasa's photo editing features include red-eye removal, cropping, resizing and colour correction. Although Picasa lacks any dedicated feature to make panoramas out of a set of photos, you can use the Picture Collage feature to piece together photos to emulate the creation of a panorama.
Launch Picasa and Windows Explorer from the "Start" menu. Use Windows Explorer to locate the images you wish to use. Drag every image that you will use for the panorama to the Picasa window to add the image to library.
In the Picasa window hold the "Ctrl" key on your keyboard and left-click on every image that you previously imported for the panorama. Click "Create" on the menu bar and click "Picture Collage."
Click the "Select All" button and then click the "Remove" button to start with a fresh collage. Click the "Settings" tab on the left sidebar and click the large drop-down box. Click "Picture Pile" from the set of options. Uncheck the "Draw Shadows" and "Show Captions" check boxes.
Click the "Clips" tab and drag each photo for the panorama one by one to the white collage workspace. Click on one photo to see the on-screen control for rotating and scaling. Click on the circle with the red dot and drag left or right to resize the photo. Drag up or down on that same dot to rotate the photo.
Position your mouse cursor within the grey circle and drag with your left mouse button to move the photo. Position each photo next to each other in the best possible sequence so your set of photos forms a panorama. Click the "Create Collage" button once you're happy with the results to create the panorama.
For most panoramas, straighten every image unless you need to correct a slight tilt in one or more of the photos. Experiment with slightly overlapping photos to eliminate or reduce the visibility of obvious seams between the photos. Right-click on a photo in the photo collage area and click "View and Edit" to alter some of the properties of the image. This is useful if you want to lighten or darken an image so it better matches the adjacent photos.