Some six years ago, I graduated in a spanish university with a degree in English Philology. Due to personal reasons, I began working in general sales, first, and then in sales insurace managing these last years. Nine months ago, I received a job offer in my town's Adult School, and started working there as an ESL teacher for two beginner to intermediate groups. Since I did not have the chance to focus myself on teaching as a career for family financial reasons, I had not a taste of it until recently. And the result has been that not only I have liked it, but am actually looking forward to a career shift. In that sense, I have practice in my business environment in teaching practice, and have also developed a good deal of it in these nine months as a teacher in the adult school. However, in the process of planning my career shift, some doubts assail me:
a) My degree holds me as a specialist in English language and literature. However, since it has been six years since I finished, and it has been just nine months since as I began working as a teacher, would it be necessary for me to undertake a TEFL course to upgrade my curriculum?
b) In this case, since I work 40 hours a week as an insurance manager, and then some 8 hours as an ESL teacher, I would only be able to take an online course, would it be a good option? I know onsite training would be better, but, sincerely, I don't know where I could find the time to complete it!
c) Finally, I would like to specialise in teaching Business English, what sort of courses and/or certifications could I take?
Thank you very much for any guidelines you can give me.