Put the Path Bar on Top - If you want to see the path to the current folder at the top of the window, open Terminal and type
defaults write com.apple.finder _FXShowPosixPathInTitle -bool YES.
Then press return. Next, hold down the option key and control-click on the Finder icon in the Dock; then select Relaunch. From now on, the path should appear, in traditional Unix format, in the title bar of all your Finder windows. To undo the change, repeat the procedure, replacing YES with NO.
Select and copy text in Quicklook previews -
Look previews, you just need to enable a hidden Finder setting. Select and copy the code below, open Terminal (/Applications/Utilities), paste that code at the prompt, then press Return:
defaults write com.apple.finder QLEnableTextSelection -bool TRUE; killall Finder
After a second or two, the Finder will restart. Once it does, you'll be able to select text in Quick Look previews and copy it to the Clipboard for use elsewhere.
If you decide you don’t deserve to select text in Quick Look, you can turn this feature off with another Terminal command:
defaults delete com.apple.finder QLEnableTextSelection; killall Finder
Both of these tips come from the writers at Macworld.