Coming at you just in time for the Aradune/Rizlona launch is a shaman trigger package focused specifically on Level 1 - 50 spells from Classic. These triggers will primarily track the duration of your detrimental spells and remind you to refresh your beneficial spells when they wear off.
I've put together a YouTube video here with a full walk-through of what's inside, and if you want some general GINA ideas you can look through all my guides here.
I also recommend checking out my Classic Shaman Spells Checklist spreadsheet so you can make sure you don't miss any spells on your way to 50.