In short, Scott is still the basic reference. Don't know when you last picked up a Scott catalog, but Scott is now a net price catalog based on condition, which they give in their intro section. That said, there's a greater range of pricing far above and way below their levels based on condition. Also, they still are always up to at least a year out of date, so take their pricing as a guideline, not law.
You'll find a lot of Canada collectors are using the Unitrade catalog since it has much more detail than Scott.
Physical Scott catalogs are large and pretty heavy nowadays. I'd prefer the CD-ROM version but the prices don't drop on them like older/used Scotts do. You might check out the price of a new set of Scotts somewhere but prepare yourself for sticker shock. Thankfully, public libraries mostly still keep up and have the newest in their reference sections.
Last but not least, welcome to the forum!
EDIT: Here's a discussion on what if Scott had an e-version:
https://goscf.com/t/55319