I am eligible to following posts someone define these jobs?Nature of these jobs,grade,salary packages,promotions etc And which job is best suited for computer science/software engineers graduates?

1)Operations Branch Marines & SSG [description of this job?]
2)Special Branch [description of this job?]
3)Special Branch - IT specialist [description of this job?]
4)Education Branch [Computer Science]

Note: [is it necessary to be good in developing softwares to get these jobs?]

My 2nd Query...

Intial test pattern of these posts?
Medical,physical,interview is mandatory before ISSB for these post?
Sub Lieutenant equal to 2nd Lieutenant?
Total seats for each post?
SSC mean 10 year job or permanent job?
SSC promotion end on captain?

I expect u guys give me detail answers to my questions,Thank you....