Though I have no problem from home, I’m having trouble accessing the printable manual from my office where I have my printer. Would anyone happen to know if there’s an alternative download location, perhaps in zip format? I have no control over the firewall, and I believe it may be preventing me from accessing this particular page because of its size.
The manual is installed on your machine when you install unity. Look into your installation folder under Editor/Data/Documentation. You can also find this folder on another machine that has Unity installed (if you don’t have Unity on your machine at work), find the manual, open it in a browser and print it as pdf.
I have made it in pdf form for you. You can download it here, but link will expire in 30 days. The pdf file size is 50 MB.
Hi Ericksson! That was very kind of you, I was trying to do the same over the weekend and finally got a PDF converter working that didn’t crap out on me. I managed to print it to PDF and uploaded it to FedEx office for printing and picked it up today, and I even took the time to insert tabs for the different chapters, so I’m now the proud owner of a printed Unity manual that weighs almost as much as my wife!. 
I wonder if anyone else out there was crazy enough to print the manual. It’s gi-normous!