If your instructor has put an item on reserve, it will be located at the Ask Alkek desk on the main floor of Alkek Library. Round Rock keeps their reserve material at the Information Desk.
Because an entire class of students might need access to the resource, the check-out period is shorter than an item from the General Collection. Checkout lengths vary depending on the item but are at least 2 hours.
To check to see if your class textbook is on Reserve, you can do a search or browse Department or Instructor.
Not ALL textbooks used in TXST courses are available on Reserve. Also, sometimes the library has the book as part of the General Collection or it could be an eBook; search the Library Catalog.
If the Library does not have your textbooks for checkout, you'll need to check with the University Bookstore for purchase/rental options. Click the Get Your Textbooks option and shop by your Student ID or Shop by Course.