Hi,
Few of the post Installation steps are :
1. Ruck SICK
2. Import profiles via RZ10
3. RUn STMS in cleint 000
4. Schedule Standard BASIS jobs
5. Setup DB13 jobs
6. Run SGEN
Then depenind upon your project requirement:
Run Local Client Copy
Security Parameters
Etc..
Would recommend to go through an Installation document once.
Thanks and Regards,
Ankit Mishra