As you say that you have completed your 12th class with Commerce Computers. There are many of higher education courses available for you. Some of these are as follows:

CA- Chartered Accountancy
B Com- Bachelor in Commerce
BFIA- Bachelor in Financial and Investment Analysis
BBA- Bachelor of business administration
Bachelor in Advertising
Bachelor in Journalism and Mass communication
Bachelor in Hotel Management
Bachelor in Elementary Education
Bachelor in Economics
Bachelor in Event Management
Bachelor in Fashion Design
Bachelor in Apparel Design
Bachelor in Graphic Design
BCom LLB
Bachelor in Computer Application
Bachelor in Animation and Graphics
Bachelor in Interior Design
Bachelor in Architecture
Bachelor in Mass Media
Bachelor in Public Relations
Bachelor in Retail Management
Bachelor in Statistics

List of some Computer Course after 12th in Commerce Maths are as follows:

Cyber security courses:
Banking, paying bills, shopping

Microsoft Office and Typing courses:
MS Word, MS Excel, Power Point


ACCP Pro:
.NET or Java

ACWD:
Web Development

DCS Plus:
Programming, Cloud Computing & Rich Internet Application Development

Web Technologies - HTML5:
HTML5, CSS3 & JavaScript

C language:
Develop software applications using C language

C++:
Programming logic & concepts

Programming in C#:
Learn C# language & start writing your own programs

VFX and Animation:
Visual effects, animation, 3D technology, graphics etc

Hardware and Networking courses

Tally
ERP 9 software