Internal vacancies

The company I work for recently announced a couple of vacant posts to all employees prior to publishing the posts to the public. Like other ads anyone interested and possesses the right qualifications could apply.

As this is the first time in my career I’ll be dealing with internal vacancies vs posts with another companies, could anyone point out please any hints, suggests, do and dont’s and other ways and means to be prepared (and possibly successful) for this scenario?eg.

-How to deal with salary?
-How to deal with current manager?
-How to deal with existing team mates?
-Changes/enhancements to CV
-What if one won’t get the job?

Thanks