Hey! Lots of great suggestions here. But something I think's been overlooked so far - analytics dashboards
I use my Google Data Studio Dashboard every single day
. It's one of the easiest ways to get easy insights into my (and my clients) website performance, and actually reduces the amount of contact I have with my clients - great for efficiency.
If you're running a website, and not looking at your analytics, you're missing out on a world of seriously valuable information. Just knowing your demographic data can give you a world of insight into who your visitors actually are.
Personally, I don't like the Google Analytics UI for making top level analysis, so GDS is a far better option for me.
If you feel the same way, feel free to check out my GDS Website Performance Dashboard
If you're having trouble getting it set up for yourself, I put together a blog post
to compliment it. It breaks down how to set up your own dashboard with your Google Analytics data, and some handy analysis's it can be used for.