I'm looking for help learning how to create and print documents with consistent colors.  I'm not even sure where to begin to look and a friend recommended this site.   If this is not the right place to ask, I would appreciate any ideas on where to start learning.    
	For reference - I'm a self-taught photographer and feel pretty comfortable shooting, editing and printing photos/canvases/and the like, but this is a whole new category for me.  I have worked with Photoshop, Lightroom and the like for many years.  And I love making graphics.  Because of that my work asked me to step in and take over document creation: schedules/signage/social media graphics...  
	I am trying to work with the schedule created by the previous person in this post.  I have no idea what color space he was working in originally.   And although I was given the specific Pantone colors for the business logos, when I open those colors on my system they do NOT match the company colors.     When I open previously created pdf files to make edits as the class schedule changes, they no longer print in the correct color.    
	To help remedy the situation I am recreating all documents from scratch.  But - Honestly, I'm not even sure if I'm using the correct program (currently using EXCEL) to create the spreadsheet schedules and loading graphics (logos) into there.    
	That is a LONG question.  I would appreciate any starting point advice you have to offer to help me keep this job.  I'm about to print a 9 foot x 25 foot banner and I *really* want to figure this all out first.