Skritter 101 might have a few good traditional characters worth studying, but it probably wont help too much for ordering non-basic foods and getting around town. I did a quick vocab list search on our site that did have a few lists you might find useful:
Taiwanese Breakfast List
台灣菜 Food words for Taiwan
早安廚房菜單 － Morning Glory Menu (General words, and Drinks section)
I would also recommend checking out @SkritterOlle post about learning simplified and traditional Chinese which should help shed some light on some of the basic differences between the two forms. Ximeng also shared a few lists in a similar topic that you might also find useful.
I hope you’ll find this info useful. Hopefully some others will share some good resources as well!
Enjoy your time in Taipei!