You can sometimes find Lorann flavors at a local cake/candy shop (I've got one about 30 minutes away that sells even 32 ounce sizes of LA). You have to look up which ones you want and make sure they are not oil based (lemon, lime, etc...). Oils are not good to vape. I think that there's a list of which Lorann flavors are good for juices somewhere in the stickies of the DIY forum.
Many people prefer other flavors to Loranne's. I use some LA, and some from The Perfumer's Apprentice. PA has a great selection and is fairly inexpensive, especially for the smaller sizes that a beginner will want.