Many people like the teaching profession and there are many ways to become a teacher after acquiring the academic qualifications. One can become a teacher in primary school or high school or higher secondary school after the UG and B.Ed. combination. One can even become a lecturer in a college after the combination of necessary qualifications like PG, NET, and/or PhD. For teaching in a school B.Ed. is the main qualification that is given due consideration in selection process and it is necessary to do B.Ed. in the desired subject. Before that one has to go for UG in the appropriate subjects so that he can take corresponding subjects in ones B.Ed.
B.Ed. is 2 years course and during this one learns many aspects of education from teaching point of view and proficiency in ones subject is also enhanced during the period. The course is generally in regular mode but some institutes offer correspondence course also. The eligibility of candidate for this course is that they should have at least a UG degree with at least 50% / 55% (depending on the institute) marks and if the candidate is PG then he should have secured at least 55% marks. Then only the candidate can apply for it either on merit basis or entrance test which depends on the institute as in which mode it admits the students in B.Ed.
There are many subjects out of which one of the subjects can be selected by the candidate in B.Ed. for specialisation so that he can teach in that particular subject. These subjects are covered under the broad category that is Economics, Biological Sciences, Computer Science, Mathematics, Home Science, Science subjects, Political Science etc. You have to choose your specialisation subject out of that depending upon your interest. In your case you can opt for Economics also as mentioned by you in your query.
In addition to your special subject you will be studying many other subjects which will help you in becoming a perfect teacher. These subjects are Basics in Education, Strengthening Language Proficiency, School Management, Schooling, Socialisation, and Identity, Guidance & Counselling, Computer Education, Developing Teacher Sensibilities, Child Psychology, Methodology of Teaching, Co-curricular activities in school and e-education, Education for Peace, Teacher Training Internships & Practicals, Understanding Teacher Learning Situations, and Environmental Studies.
Knowledge is power.