There are a few ways
to add photos to an album. One method is to just open the
album you want to add photos to, then open Windows Explorer, and
then
drag and drop the photos into that album. You can also use
the "Add Photos" options like here:
Or you can select the Add Photos menu item from the File menu
like so:
Once you have added your photos to the album, you can rearrange
them by drag & dropping them in the desired order.
You can also rotate them or annotate them.
Don't forget to hit the [Upload] button to send the photos to
the server: