How to prepare for best ML experience

[Reach9]

Hey guys. I'm going from Lion to Mountain Lion like many of you, but I was wondering what i could do to clean up my MacBook Pro before making the jump to the new OS.
Are there any tools (preferably free) that I can use to clean up my Mac? Maybe get rid of duplicates and chart out what my biggest files are? I still have about 100GB left in my hard drive, but i've been noticing my Mac acting pretty laggy recently.

Any suggestions? Thanks.

 

[mrapplegate]

Hey guys. I'm going from Lion to Mountain Lion like many of you, but I was wondering what i could do to clean up my MacBook Pro before making the jump to the new OS.
Are there any tools (preferably free) that I can use to clean up my Mac? Maybe get rid of duplicates and chart out what my biggest files are? I still have about 100GB left in my hard drive, but i've been noticing my Mac acting pretty laggy recently.

Any suggestions? Thanks.

I use the simple and old
http://www.omnigroup.com/products/omnidisksweeper/
Free and does the job well, even for it's age. It's not fancy by any means.

 

[Reach9]

I use the simple and old
http://www.omnigroup.com/products/omnidisksweeper/
Free and does the job well, even for it's age. It's not fancy by any means.

Thanks!

Do you know why my Mac has been acting slow though?
Do you think that not shutting it down often enough is a reason?

 

[mrapplegate]

Thanks!

Do you know why my Mac has been acting slow though?
Do you think that not shutting it down often enough is a reason?

Sorry, slow is too subjective to diagnose via a forum.
Check Activity Monitor and see if any process is using the CPU excessively.
Not shutting down often should not slow it down. But saying that a reboot can't hurt