Hi Ruby,
You can go to Administration Perspective in HANA Studio and click on small monitor button at the top - their you can monitor your HANA System.
To know more about HANA Administration, please follow HANA Administration Guide:
http://help.sap.com/hana/SAP_HANA_Administration_Guide_en.pdf
You can watch Administration related videos at SAP HANA Academy:
http://www.saphana.com/community/implement/hana-academy#installation-administration-topics
Regards,
Vivek