From the summer of 1990... the first issue of a long-running magazine the could ONLY exist in the pre-internet world: EPI-LOG: the magazine of TV episode guides.
Each issue (initially black & white newsprint interiors behind a glossy colour cover) just contained... episode guides. At first these were fairly superficial but later became far more detailed recaps of each show. Quite how the writers managed this for shows that had been AWOL for decades (remember: this is all pre-DVD, streaming, You Tube and even - I think - the launch of the Sci-Fi Channel) is a little unclear and I wouldn't be surprised if there are a few howlers hidden in the text somewhere.
Although the line-up for this first issue was clearly SF shows (feel free to debate the contributions KNIGHT RIDER, STREETHAWK and AUTOMAN made to the genre) Epi-log later expanded to include a much wider remit of action/ adventure and horror shows. Even SLEDGE HAMMER! (yay!) was featured in one issue.
Most issues had some sort of genre or theme to link together the disparate shows featured.
One thing I didn't like about these early issues is that there was no behind-the-scenes information. That's the stuff I love as much as (or more so) than the finished product on the screen. That was amended in later issues as a 'Notes' section was appended to each episode summary. And the format switched to better interior printing (still b&w) and squarebound binding.
It also spun off EPI-LOG JOURNAL which featured articles and assessments of various shows. We'll get to that.