Ready to dive into immigrant research? Start with this sampling of the best resources for exploring your European roots, from A for Albanian to, well, U for Ukrainian. Of course, we don't have room to include all the great resources for each immigrant group. For more research tips, Web sites, books and organizations relating to your ancestors' European homeland, see our online Ethnic Toolkits <www.familytreemagazine.com/ethnic_intro.asp> and the new Family Tree Guide Book to Europe (Betterway Books).