Courses after 12th Commerce

The approximate fee applicable to Digital marketing is around INR 35,000 for the Certification on Digital marketing.

Ccs. Iamr. AC. In go through this link. You can find your solution here.

Yes, you can study integrated M.Sc in Computer Applications and Information Technology in K.S. School of Business Management.
The eligibility criteria for admission in this college is that candidate must have passed 10+2 examination from any recognized university in science or commerce stream with En

After 12th, you have many options like:
CA
CMA
CS
LLB
B.Com
BBA
BCA
Hotel management

Yes, you can do this Diploma after your 12th from Kazian School of Management, Miraroad (East) Thane and there are other two, which provide online and part time classroom education for this Diploma. The information for these two is given in the below link.
Link- https://www.shiksha.com/accounting-com