The main books about Leicester in this period are:
Leicester During the Great War by Ben Beazley.
Leicester in the Great War by Matthew Richardson.
Leicester 1914-1918 by FP Armitage.
Rutland and the Great War by G Phillips (see http://www.bbc.co.uk/news/uk-england-leicestershire-29666053)
as well as
Fifty Good Men and True by Michael Kendrick (the story of the Coalville 50)
How Saxby Street Got Its Name (see link to blog below)
Memories in Conflict (see link to blog below)
The Harboro' Boys by Barry Summer
Wigston in the First World War by Duncan Lucas, Derek Seaton, Tricia Berry & Jean Dann
General histories of Leicester that cover the period include:
Leicester in the 20th Century by D Nash & D Reeder.
The Story of Leicester by Siobhan Begley.
Leicester Past and Present. Vol. II: Modern City by Jack Simmons.
Leicester City FC's video 'Foxes Remembered: The Story of Leicester City and the First World War' - https://youtu.be/jz5PMhoWgJY
Leicester City Museum's video 'Tigers at the Somme - The Leicestershire Regiment' - https://youtu.be/-q9i_bEKyqA
Local WW1 Websites
A Century of Stories - http://www.centuryofstories.org.uk/
BBC WW1 at Home's Leicestershire section - http://www.bbc.co.uk/programmes/p01p34hv
Charnwood Great War Centenary Project - http://charnwoodgreatwar.billbrookman.co.uk/
Kibworth in Wartime - http://www.kibworth.org/wartime.html
Knighton Remembers WW1 Exhibition - http://www.stguthlac-knighton.co.uk/
Leicester City FC's online story of Leicester Fosse in WW1 - http://www.lcfc.com/news/article/leicester-fosse-and-the-first-world-war-part-one-2188434.aspx
Leicestershire War Memorials project - http://www.leicestershirewarmemorials.co.uk/
Leicestershire Regiment Soldiers in WW1 - http://ww1tigers.com/
My Leicestershire History WW1 resources - http://cdm16445.contentdm.oclc.org/cdm/landingpage/collection/p16445coll9
Loughborough Roll of Honour - http://www.loughborough-rollofhonour.com/
Rutland Remembers - http://www.rutlandremembers.org/
The Leicestershire & Rutland branch of the Western Front Association - http://www.leicestershireandrutlandwfa.com/
The Story of Leicester - http://www.storyofleicester.info/city-heritage/at-war/world-war-i/ - includes the SDSA Leicester at War Walking Trail.
The University of Leicester during WW1 - http://www2.le.ac.uk/institution/ww1
Captain JD Hills, Letters from the Front - https://ww1lettersfromthefront.wordpress.com/
How Saxby Street Got Its Name - http://www.howsaxbystreetgotitsname.org.uk/ and https://soundcloud.com/saxby-street
Memories in Conflict - http://memoriesinconflict.wordpress.com/
Resources for Schools
BBC for schools - http://www.bbc.co.uk/schools/0/ww1/
Spartacus Educational - http://spartacus-educational.com/FWW.htm
'World War 1 - Shared Pasts Shared Futures' has five resource packs aimed at Leicester schools - http://www.sdsa.net/WW1-spsf/
The Derbyshire Remembers project has ideas for working in schools - http://derbyshire-remembers.fifthword.co.uk/
WW1 events, activities etc. in Leicestershire & Leicester
Leicestershire Commemorates WW1 - http://www.goleicestershire.com/explore-leicestershire/the-great-war.aspx
Leicester Remembers the Great War - http://www.visitleicester.info/things-to-see-and-do/first-world-war/
General WW1 Websites
The BBC WW1 pages - http://www.bbc.co.uk/ww1
The British Library's WW1 resources - http://www.bl.uk/world-war-one
Europeana 1914-1918 – untold stories & official histories of WW1 - http://www.europeana1914-1918.eu/en
The Imperial War Museum - http://www.iwm.org.uk/history/first-world-war
The London Illustrated News 1914–18 archive (searchable by locality) – http://www.illustratedfirstworldwar.com/.
The National Archives' First World War Sources for History - http://www.nationalarchives.gov.uk/pathways/firstworldwar/index.htm
National War Memorial Websites
War Memorials Archive (formerly UK National Inventory of War Memorials, by the IWM) - http://www.ukniwm.org.uk
War Memorials Trust - http://www.warmemorials.org
War Memorials Online (by War Memorials Trust) - http://www.warmemorialsonline.org.uk
Commonwealth War Graves Commission - http://www.cwgc.org