option 1)to save individually, when you close them from the editor you can save them. on mine a box pops up and asks if you want to save the changes you made, you click "yes" and another box pops up. you can select what you want to save them as( a scroll down list pops up that includes tiff, jpg etc). you can either save them in the same folder with the same name as they originally were in( that's what will pop up after you click "yes" ) or make a new folder and /or new name and save them there. ( to rename, you select the old number of the image in the bar in the box that pops up, and type in IE "uncle ned" instead , then it will automatically add the "jpg"/tiff/psd or whatever type file you chose suffix when it saves it. you select the folder via the top address box ) i personally save them in another folder, just so they are easier for me to find and some i name so i can identify them easier some i just leave the number of the name. i can tell them apart by the "jpg" suffix .
option 2)if you want to save them all to the same place you can go to "file", "process multiple files" and a box will open that you can scroll for "all opened files", then enter the folder you want to save in and enter the type of file, then it will save them all to the same place( i don't think you can rename them individually this way, just like the number and maybe something generic for all of them like "summer 09")
. if you are done editing them you can save as jpg. it only degrades if you keep opening it and a lot of places you need jpg to get printed or post. if you aren't done editing you might want to save as tiff or psd but the psd you won't be able to view in all programs, basically just in a photoshop program which is a pain. once i convert to jpg, i save them as the largest size jpg but that is because some i sell and they ask for the largest file size possible in jpg.another box will pop up with those options once you change it to jpg and select the folder you are saving to.