Post installation steps or activities for version PO 7.5

Hello Experts,

This is my first implementation project,till time i have worked on already established system so i am bit confused with implementation stuff..

Details:

We are installing SAP PO 7.5 version system with Oracle 12c database.

Queries:

1) Which activities need to perform after fresh installation of PO system.

2) How to check stability of PO system.

3) How to do configuration for fresh SLD.

4) Which Transportation method need to use for transporting designed objects.

Also please advise me if i am missing any important point.

Regards,

Karan K.