Wimpy Kid:
https://1lib.tw/s/Diary%20of%20a%20Wimpy%20Kid/?extensions%5B0%5D=pdf&order=popular
Harry Potter:
https://1lib.tw/s/harry%20potter/?extensions%5B0%5D=pdf&order=popular
Pets:
https://1lib.tw/s/pet%20cat%20dog/?extensions%5B0%5D=pdf&order=popular
Travel:
https://1lib.tw/s/travel/?extensions%5B0%5D=pdf&order=popular
P.S. 建議蒐尋時，參考下圖設定檔案類型為 pdf，才能夠使用 BBE小工具來速查單字：
其他線上圖書資料網店（請低調）
- https://z-lib.org/
- http://sci-hub.bz/ (研究所以上專用)
- https://www.pdfdrive.com/
- https://epdf.pub/en/
- https://dokumen.pub/
- http://gen.lib.rus.ec/
- https://archive.org/
- http://www.bartleby.com/
- http://archive.org/details/cornell
- http://www.freetechbooks.com/
- http://www.bookyards.com/
- http://www.gutenberg.org/
- http://www.free-ebooks.net/
- http://www.manybooks.net/
- http://www.freebookspot.es/
- https://freecomputerbooks.com/
- https://digilibraries.com/
- http://www.digitalbookindex.org/search001a.htm
- https://xmsoushu.com/
