Some websites where you can get almost any book for free (May be some paid)
• PDFDrive.com
• OceanofPDF.com
• pdfroom.com
• Pdfgeni.com
• PDFGrab.com
• EbookPDF.com
• KuPDF.net
• ePDF.pub
• PDFCookie.com
• SoPDF.com
• PDFSearches.com
• OiiPDF.com
• FindPDFDoc.com
• PDFSlide.net
• EDoc.site
• PDFDuck.com
• pdforigin.info
• LargePDF.com
• PDFStop.com
• freepdfbook.com
• PDFSearchEngine.info
# Anyone Need Research paper or Books
• http://gen.lib.rus.ec
• http://sci-hub.org
• http://sci-hub.cc
• http://sci-hub.bz or .tw
• http://search.crossref.org
• http://booksc.org/
• http://libgen.io/
• http://gen.lib.rus.ec/scimag/
• http://airccj.org/csecfp/library/index.php
# For Text Books these are Some More Links
• http://libgen.org/
• http://gen.lib.rus.ec/
• http://en.bookfi.org/
• http://lib.freescienceengineering.org/
• http://bookza.org/
• http://bookzz.org/
# Study Materials And Books Related Bots
• @libgen_scihub_2_bot
• @ebooksdlbot
• @bookdownbot
• PDFDrive.com
• OceanofPDF.com
• pdfroom.com
• Pdfgeni.com
• PDFGrab.com
• EbookPDF.com
• KuPDF.net
• ePDF.pub
• PDFCookie.com
• SoPDF.com
• PDFSearches.com
• OiiPDF.com
• FindPDFDoc.com
• PDFSlide.net
• EDoc.site
• PDFDuck.com
• pdforigin.info
• LargePDF.com
• PDFStop.com
• freepdfbook.com
• PDFSearchEngine.info
# Anyone Need Research paper or Books
• http://gen.lib.rus.ec
• http://sci-hub.org
• http://sci-hub.cc
• http://sci-hub.bz or .tw
• http://search.crossref.org
• http://booksc.org/
• http://libgen.io/
• http://gen.lib.rus.ec/scimag/
• http://airccj.org/csecfp/library/index.php
# For Text Books these are Some More Links
• http://libgen.org/
• http://gen.lib.rus.ec/
• http://en.bookfi.org/
• http://lib.freescienceengineering.org/
• http://bookza.org/
• http://bookzz.org/
# Study Materials And Books Related Bots
• @libgen_scihub_2_bot
• @ebooksdlbot
• @bookdownbot