What should I join B.Ed. or J.B.T. Is there any university through which I can do these courses through distance mode.

As you are already a PRT then there is no use of doing any kind of diploma course again. You can go for B.ed. in distance mode because you are a govt. Teacher. B.ed. is of two year in distance mode. So go for that. Along with you can also pursue PG in english.

AS u say that you are a primary teacher there is no use of doing JBT/ETE/D.Ed as these are the courses for primary teacher so you can do B.Ed . list of universities offering B.ed by the distance learning mode.Andhra University School of Distance Education, Visakhapatnam : (Andhra Pradesh), Bangalo

ignou conducts B.Ed in distance mode.

Education Guidance, Mumbai Diploma in Education (D.Ed) - 2 Years , Correspondence , Diploma Fees: INR 500000 Affiliated to Mahatma Gandhi University, Meghalaya GVN Infotech, Kolkata Bachelor of Education (B.Ed) - 1 Year , Correspondence , Under Graduate Degree Fees: INR 6000