Question

please tell me any good book for studying android and also tell me about the link from where i can download it for free.

Answer 1

http://developer.android.com/sdk/index.html Everything is there.

Answer 2

Do you have an android phone?

Answer 3

if you do, try: https://play.google.com/store/apps/details?id=com.widevision.android&feature=search_result
or
https://play.google.com/store/apps/details?id=com.programmersinstitute.creatinganandroidappinjavawithappinvjar1&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5wcm9ncmFtbWVyc2luc3RpdHV0ZS5jcmVhdGluZ2FuYW5kcm9pZGFwcGluamF2YXdpdGhhcHBpbnZqYXIxIl0.