HI, Are you asking for Hotel Management?
Then you can refer to the following material:
These are ebooks: HM E-books
General Knowledge and Scientific Aptitude Manorama Yearbook
Pratiyogita Darpan
Pearson India Yearbook
Arihant
Numerical Ability and Analytical Aptitude
S Chands 30 days wonder for Maths
RS Aggarwal (Quantitative Aptitude)
English
Wren and Martin
Pearson's English
Arihant
Service Aptitude
R Gupta book of Hotel Management
Arihant
HM Entrance exam guide by Gladvin

Refer to the above material.
Good Luck.