Although I have had my macbook for almost a year and a few years ago I had an old ibook (remember those? haha) I still, unfortunately consider myself a mac newbie. I love my mac, I would never return to a PC with windows, but theres one thing I miss from my windows days. Disk Cleanup. I have a macbook with an 80 gig hard drive, and I have filled it up. I have an external hard drive which I use, but I can't bring it everywhere I go, and as I currently only have about 7 gig left on my internal hard drive, I'd like to free up space. I'm 90% sure I have at least 10 gig worth of useless junk (old files, temporary files etc.) on my computer, but I cant figure out where and what to delete. Is there any way to do a disk clean up to free up some space?