For being eligible for CA Foundation, you have to attend a mandatory period of 4 months study period. During this period, you might have to join a coaching centre given the fact that CA is a tough course and every exam either Foundation or Intermediate or Finals need your undivided attention. So while doing CA, you may join any other course through Distance mode but through a regular mode is not merely possible because of the mandatory study period. But you ca join Hotel Managament course and study through Distance education.