Please for referral information, how can I get more disk space, or actually information and guidelines that can have enough free disk space. How, I have to delete documents or downloading to another drive.

Question

Please for referral information, how can I get more disk space, or actually information and guidelines that can have enough free disk space. How, I have to delete documents or downloading to another drive. (The problem is that Safari could not download the file "iTunesSetup.exe" because there is not enough free disk space.Try deleting documents or downloading to another drive) ... Perhaps this is the main problem why can not open iTunes and inscription is: the folder "iTunes" can not be found or created, and is required. The default location for this folder is inside the "Music" folder. - And after options ok, appears option: Choose iTunes Library with inscription iTunes needs a library to continue. You may choose an existing iTunes library or create a new one - but still following options Choose Library and the following options can not open iTunes ... Please for instructions on how to eliminate the problem or eror ...
Mac is running OS X v10.6.8, Safari should be 5.1.10. Or  Mac OS X  /  Version  10.6.8  /  Build 10K549 / Serial Number W8****ATM  /  Processor 2.4 GHz Intel Core 2 Duo  /  Memory 4 GB 1067 MHz DDR3 or More Info:
Hardware Overview:
  Model Name: MacBook Pro
  Model Identifier: MacBookPro7,1
  Processor Name: Intel Core 2 Duo
  Processor Speed: 2,4 GHz
  Number Of Processors: 1
  Total Number Of Cores: 2
  L2 Cache: 3 MB
  Memory: 4 GB
  Bus Speed: 1,07 GHz
  Boot ROM Version: MBP71.0039.B0B
  SMC Version (system): 1.62f7
  Serial Number (system): W80394HFATM
  Hardware UUID: 94647506-C5D0-5D73-BC7F-FC680D238F43
  Sudden Motion Sensor:
  State: Enabled
<Personsl Information Edited by Host>

Answer 1

buy an external HD   1TB for $60
NO notebook is a mass storage device, so dont try to turn it into one, it doesnt work that way.
Unless youre using it every couple weeks, its static data and should be on an external HD
In the case of a Macbook Air or Macbook Pro Retina with ‘limited’ storage on the SSD, this distinction becomes more important in that in an ever rapidly increasing file-size world, you keep vital large media files, pics, video, PDF collections, music off your SSD and archived on external storage, for sake of the necessary room for your system to have free space to operate, store future applications and general workspace.  You should never be put in the position of considering “deleting things” on your macbook SSD in order to ‘make space’.
Professionals who create and import very large amounts of data have almost no change in the available space on their computers internal HD because they are constantly archiving data to arrays of external or networked HD.
Or in the case of the consumer this means you keep folders for large imported or created data and you ritually offload and archive this data for safekeeping, not only to safeguard the data in case your macbook has a HD crash, or gets stolen, but importantly in keeping the ‘breathing room’ open for your computer to operate, expand, create files, add applications, for your APPS to create temp files, and for general operation.