Xperia s in stuck when boot rom topic

At the the very sry in my poor langauge . I already unlock bootloader and update kernel new Doomlord project.now i have TWRP 2.7.0.1 when im install ROm Kitkat V3 http://forum.xda-developers.com/show....php?t=2605649. IT pass but after that the boot logo(look like nexus boot logo) are load for long time.i want to install another rom but ican't find the way to access my phone storage now i can use only TWRP pls help me how to access phone storage.