Making of the Liberal Guardian, 20XX:
0) Get $5,020 or so.
1) Check Free Speech issue: if it's C+, your printing press will be raided by the Firemen fairly routinely--about 6 times a year, minimum, even if the site has 0 Heat. (Firemen's armor is fairly weak, but their flamethrowers are very lethal. Don't let them shoot!) Anyone writing the dailies will rack up a count of Harmful Speech (on par with assault or so, I'd guess) per day spent writing the paper. These add up!
2) Use the Z key at the main screen to toggle through safehouses. Find one of the two Abandoned sites; if you currently control the Crack House, it's also a potential site.
3) Invest in the location: all you need is the Printing Press, but establishing a Business Front is good general practice. You might also fly a Flag there once you've finished the big-ticket investing--it helps your secrecy in proportion to the Flag Burning issue.
4) To run a Special Edition at change/month, you need to have suitable materials (Research Papers, Police/Prison Records, Judicial Corruption Evidence, CEO stuff, Corporate Files, Secret Docs, IntHQ Disc, or the List) at the site. To run a daily issue, someone needs to be on-site and assigned to Writing News.
4A) You don't need people on-site to write a Special Edition. In fact, being physically present can be a liability if you print Secret Documents: that counts as Treason for everyone at the same location as a Printing Press. Print the government secrets without anyone present=no Treason charges, as of 4.06.3. [That's probably an exploit, though.] You can move docs around from the Review screen: hit 8 to bring up a list of gear and locations. That said: if nobody's home when the Firemen raid, they can just burn the press and confiscate the evidence. $3K to replace the Press is cheaper than getting rid of a Treason charge, though.
Edited to clarify Harmful Speech/Fireman raids in step 1 (don't take them lightly)-KA101.