After you finished SAP HANA Studio installation, it may be you cannot found ABAP Perspective in your SAP HANA Studio.
The solution for this problem is simple. you need to install SAP HANA Studio Update Software on Menu Help->Install New Software. Then input URL http://tools.hana.ondemand.com/kepler , after this SAP HANA Studio will retrieving available software that you need to install. Check the software which you need it.
After Installation Software finished, you can use ABAP Perspective on your SAP HANA Studio.