TPvP.zip contains 2 .bsp files(tpvp_mmap_css.bsp and tpvp_field_css) and 3 folders.
Installing instructions:
-Download TPvP.zip
-Extract TPvP.zip
-Copy the extracted folder
-Open up the folder where Counter-Strike:Source is located
-Go to cstrike\custom\
-Paste in the extracted folder.
NOTE:If the custom folder in cstrike doesn't exist the create it