Here as per your demand I am suggesting you books of SSC Combined Graduate Level examinations subject wise:

Books for Quantitative Aptitude

Quantitative and English Series Quantitative Aptitude by RS Agarwal
Quicker mathematics by M Tyra

Books for English
Grammar by Wren and Martin
Word Power Made Easy by Norman Lewis
Essential English Grammar by Raymond Murphy
Objective General English-SP BAKSHI
Objective General English by Dr. RS Aggarwal & Shri Vikas Aggarwal

Books for Reasoning
Verbal and Non-Verbal Reasoning by RS Agarwal
Verbal and Non-Verbal Reasoning by Kiran Publication
Analytical Reasoning by MK Pandey
Non Verbal Reasoning by BS Sijwali & Indu Sijwali

Books for General Awareness
Lucent General Knowledge (availble both in hindi and english but english edition gives better coverage)

Any monthly magazine, such as Pratiyogita Darpan, Wizard or Chronicle One news paper such as Hindu, Times of India, Hindustan times etc
One year book, for reference, Manorama year book
Any Budget special magazine