Lucen't publications books are highly recommended for the same . Also if you go through the social studies books of class 8to 12   I.e. of geography you can grasp all the concept easily and if you try to find the ncert books of those standards in Hindi you will get it easily . As ncert books cost are cheap and best I prefer go for hard copy in spite of pdf still there are some apps and if you search with proper keyword on google you may get a pdf.
Thank you