Here is a List of Some Amazing , Exquisite Books on Sikhism
Books By Bhai Vir Singh
http://www.jsks.co.in/Bhaivirsingh.htm
Books on Sikh History
http://www.jsks.co.in/sikhhistory.htm
Books n Eminent Sikh Personalities and Sikh Historical Figures
http://www.jsks.co.in/eminent_sikhs.htm
Some Great Books on Sikhism
http://www.jsks.co.in/sikhism_general.htm
Books on Life and Teachings Of Sikh Gurus
http://www.jsks.co.in/sikhgurus.htm
Some Great books on Sikh Philosophy
http://www.jsks.co.in/sikhphilosophy.htm
Books or Steeks with eanings and translations of Guru Granth Sahib
http://www.jsks.co.in/sggs.htm
Books on Sikh Gurbaani / Gurbani
http://www.jsks.co.in/gurbaani.htm
Some Amazing Books on Sikh Gurdwaras
http://www.jsks.co.in/gurdwaras.htm
A great Collection of Gutkas of Nitnem , Sukhmani sahib , Dukhbhanjani sahib , Aasaa Di Vaar
http://www.jsks.co.in/gutke.htm
Books on Saints like Kabir , Farid, Ravidas , Namdev etc whose Bani is present in Guru Granth Sahib
http://www.jsks.co.in/saints.htm
Books n Famous Punjabi Kisse like Heer varis Shah , Sohni mahivaal , Heer damodar
http://www.jsks.co.in/kisse.htm