Publishing Software
You might want to create posters, but you'll probably leave that up to the video tape producers and promotional companies and use the ones supplied by them.
Newsletters are uncommon, but might be useful to inform your store staff of managerial comments and ideas or general store events or even to send monthly or bimonthly newsletters out to your customers!
Programs like Broderbund TypeStyler and Aldus Typestry are very good text manipulators, allowing you to make flashy, eye-catching text to include in your published printouts.
I strongly suggest getting a laser printer if you're planning on doing a lot of publishing, but, although slower, an ink jet printer will do. Dot-matrix printers are often of such low quality (and are so slow) that it's not worth spending so much money on the software when you're output doesn't look much better than if you simply typed it in a word processor or on a typewriter!