How do I split a pdf file into separate smaller files?

Do I need to purchase adobe pro for each computer (my desk top and laptop)?

So in case you need to split a pdf into separate pages (which happens once in a year) you have to pay 16 euro per month? Difficult for me to understand. Just made this account to express my displeasure. I would definetely pay for more advanced tools but not for such a basic option. Guess i have to find other ways to do it and unistall Acrobat Reader DC. The only thing i regret is wasting too much of my time figuring out what is wrong! Thank you

Since you have already purchased the full version, double click to open Adobe Acrobat DC, NOT the Adobe Reader.  When Adobe Acrobat DC opens, it will ask you to sign into your account.  Once you are signed in, it will load and then it will ask if you want it to get started using the program, click continue.  Then it will ask if you want Adobe Acrobat DC to be your default program for PDF's, select continue.  A dialog box will pop up with gray lines running at the top as it tries to load all the programs that may use adobe as default for the PDF --Close out of that link and it will bring you to the main adobe page.  At the top it shows "Get Started With Adobe DC" and 5 options below.  To the left of your screen, click on "My Computer" to browse for the PDF file you wish to split. Double-click on the file to bring it into Adobe Acrobat DC.  At the top in the menu bar, click on tools.  On the tools menu, look for Organize -->Open-->Split-->Split By Number of Pages (default is 2, set this to 1).  If you wish to have several pages of the PDF together, then put that number.  To get 1 page per file, change it to 1. Split Multiple files and in the output you may select to place the files in a new folder or continue with the original folder where your files was located. Once you select Split, it will split your file according as you requested.  NOTE: Go to the folder you chose and you will see all your files there with the number at the end.  The FIRST file is your original file that you started with, then the other files with the same file name and a number at the end are the files that have been split the way you wanted them.  I hope this helps. Jem