The textbooks of Class 11 and 12 are available online, the Chhattisgarh Text Book Corp (CTBC) said on Friday. The textbooks can be ordered online on the Corporation’s official website www.tbc.cg.nic.in, a statement said. A discount of 15 percent is given to principals, teachers and students of Class 11 and 12 for buying directly from book stores of CTBC, it added. These books are available in Raipur, Rajnandgaon, Jagdalpur, Bilaspur, Ambikapur and Raigarh.