Hey Aradhna, Junior Basic Training (JBT) is a Diploma level Educational course. It is one of the teacher training programs known as JBT or Junior Basic Training course. After completing the Diploma course students qualifying for this training essentially get employed in schools imparting elementary education.

Those who wish to pursue teaching career, can take JBT admission in Delhi through State Council of Educational Research & Training (SCERT) Delhi & Haryana. Candidates with 50 percent minimum marks in Senior Secondary with English subject as compulsory are eligible for application. There is 5 percent relaxation for SC/ST candidates of Haryana residents if applying for Haryana Board. The course duration is of 2 years.
Tips for getting Admission in it :
The entire procedure of enrollment is through online process on counseling basis. It is always helpful to avail facilitation of some good institute around. Dont hurry while choosing institute and look for the credible one.
Generally, JBT counseling takes place somewhere around the month of April and goes on through a couple of rounds.

I hope this helps to you , thank you !!!