As much i know about B.Ed and BTC
B.Ed is a Bachelor degree course for those students who wants to choose teaching as their career option.If you wants to become a teacher of mid-senior level in school, it is mandatory to pursue this course as per government rules. There is no Age limit to pursue this course. Those candidates who have completed their graduation with aggregate 50% marks are eligible for this course.
BTC is a training certificate course are that qualifies the candidates to become a teacher in Primary Schools. Those candidates who wants to become a teacher or interested in teaching especially at primary level (1 to 6), this course is important for them. Rules and regulation made by NCTE (National Council of Teacher Education) and State Government is important to take admission in this course. No age criteria have been set for this course.
It is totally depend on you that at which teaching level you want to teach or interested. Both of the courses have great career option in Government and Private sector.