HCM information needed

Dear all,

as we are now in implementing sap hcm for the client. what are all the things i can suggest to the client now. please give some valuable inputs as i am new to this.

My client has renewed sap license now. my question is what are all the things do we need to take care regarding indian payroll? as of now we have not implemented any sapnotes in sap system.or after renewal everything will come automatically?

so,now do we need to implement sap notes and patches individually? if yes in what sequence do we need to do? like snotes first or patches first?

or do we need to implement support pack? or anything. if yes how?

when i check the patch level i found that it is in level 0036,as mentioned below. Request you to please let me know,what are these things? are these useful?

SAP_HRCRU 600 0036

SAP_HRCPT 600 0036

SAP_HRCPH 600 0036

SAP_HRCNZ 600 0036

SAP_HRCNO 600 0036

SAP_HRCNL 600 0036

SAP_HRCMY600 0036

SAP_HRCMX 600 0036

SAP_HRCKR 600 0036

SAP_HRCJP 600 0036

SAP_HRCSE 600 0036

SAP_HRCSG 600 0036

SAP_HRCTH 600 0036

SAP_HRCTW600 0036

SAP_HRCUS 600 0036

SAP_HRCVE 600 0036

SAP_HRCZA 600 0036

SAP_HRGXX 600 0036

SAP_HRRXX 600 0036

points will awarded. please help.