What are the steps to establish an academic journal? We want to establish a journal. Also I want to add the journal to various indexes. What are the main steps /guide to building an academic journal? What should be done to enter the SCI/SCIe/SSCI index. What is the difference between ISBN, ISSN, DOI numbers. I'm not interesting basic steps like deciding topic, name ,reviewers and editors of journal. It would be nice if you mentioned about the application/reference prices.

Note:This question might be broad so I can narrow this topic in the direction of your suggestions/comments
This question is indeed rather broad. The specific questions you ask are at once basic and easily researched (you can get basic information about ISSN, ISBN and DOI on Wikipedia, for example) and quite complex (indices have their own rules). This leads me to think that you don't know what you don't know.

I suggest that you contact 


A managing editor or production manager of a journal in your field
The publication liaison of your learned society
The acquisitions or new projects person at one of the big journal publishers like Elsevier or Wiley


Good luck.