To buy the book (Search these sites for 'Bringing Them Home' or 'Wymeswold'):
Probably the definitive site for finding detailed information about military subjects in WW1:
To find details about an individual soldier - the Commonwealth War Graves Commission (fatalities only) and the National Archives:
Commonwealth War Graves
A vast amount of information, and an amazing archive of WW1 photos at the Imperial War Museum:
Visiting the Western Front
Accommodation: I usually use gites (holiday cottages), but I have used hotels, B&Bs, and campsites. Here are some recommendations.
http://www.gites-de-france.com/ the main enquiry site for gites. Good service.
http://www.theoldriflesofbazentin.com/ Highly recommended gite. Very rural.
http://www.le-gourmet.fr/ an inexpensive, but clean and welcoming hotel in Bapaume.
http://www.la-ferme-de-la-papote.com/ a B&B near Hazebrouck. Run by an Englishman!
http://www.talbothouse.be/en/bb/home Astonishlngly, you can actually stay in Talbot House, a haven for troops coming out of the terrible experiences of holding the line at Ypres.
Albert, Somme http://www.musee-somme-1916.eu/ A personal favourite. Underground museum.
Arras http://www.arras.fr/tourisme/office-de-tourisme/carriere-wellington.html Former underground quarries used by Britsh and Commonwealth troops as a base.
Bullecourt http://memoire.pas-de-calais.com/index.php/fr/premiere-guerre-mondiale/musees-centres-interpretation/62.html?id_offre=PCUNPC0620006461 Excellent museum founded by a local couple, M. et Mme. Letaille. Check opening times before you visit.
Poperinghe (Ypres Salient): Talbot House was an oasis of peace just behind the lines. Must see if you are in Ypres. http://www.talbothouse.be/en/museum/home