Photoshop Tips Telstra Dome

Hello,
Wondering if there are any Photoshop buffs in here who can give me some basic tips on how to spilt this image into two layers, so I can change the levels, and contrast/brightness of the foreground, in an effort to bring out the details of the subject?
THanks, and regards,
Oz

Wondering if there are any Photoshop buffs in here who can give me some basic tips on how to spilt this image into two layers, so I can change the levels, and contrast/brightness of the foreground, in an effort to bring out the details of the subject?
THanks, and regards,
Oz
