Hello Aspirant,

As your of 40 years  and done msc zoology  and done B.Ed and you wanted to start chemist shop and i think there is no need of any study and you should follow some rules and regulations and should have particular licences so you by following rules you can start the chemist shop and you can also go to teaching profession ypu have a chance to go into teaching profession also and all the best for your future and i think my suggestions and knowledge may be helpful to u.

Hope this may help u.

Thank you!!