Online Resources

Search for books, audio books, e-books, DVDs, and Blu-Rays in our collection using our online catalog. You can also log in using your library card number and phone number as password to renew, reserve, and request items. 

Download the free Overdrive app on your smartphone, tablet, or e-reader to access thousands of e-books and audio books 24/7. Once on Overdrive search for Lone Star Digital Library, select Castroville Public Library, then sign in with your library card number and use your phone number as password. You can check out three items at a time and reserve items that are currently checked out. Once checked out, Overdrive e-books and audio books can be enjoyed from the app or downloaded so you can access them even when you don't have an internet connection. You can also access Overdrive straight from your browser at

​TexShare Database
TexShare is a cooperative program designed to improve library service to Texans. TexShare focuses on the efficient sharing of library holdings, with an emphasis on electronic information resources and traditional collections of books and journals. To access the TexShare Database just visit the online catalog, log in using your library card and your phone number as password, and click on the TexShare icon. 

Mango Languages
Learn one (or more) of over 60 languages using this PhD created and linguist approved software and have fun in the process.  There is also a free app that you can download to learn on the go.

Mango Languages

**Important Information about using your library card # to log-in to Mango Languages**
In order to log-in to Mango Languages, you must log-in with an 8-digit library card, which you create by simply adding zeros “0” in front of your library card number. For example: If your library card were “54000” then you would enter "00054000".