Hi,
@jessie , I see from an earlier post that you've got libre.
If you've got a kindle, I'd recommend getting a copy of Sugar Surfing by Stephen Ponder.
It's got a lot of good tips on how to get the most out of cgm and libre, really helped me a lot when I first started out with libre.
In the first few weeks with libre, I was really just using it for the obvious things like watching out for rapid drops so I could tail off hypos, but after reading the book, as time went by I started using it for other things like checking basal overnight, playing with pre-bolus timing, checking how different ratios worked out, how much 10g raised me, how much 1u lowered me, which is the basis for working out ratios, and just generally figuring out when and by how much to nudge and tweak things with 1 or 2u here if it looks like a bolus was too small, or 1 or 2 dextro tabs ther to nudge back up before things got too out of line.
The big surprise I found with using libre is that very small steps taken at the right time can give big rewards when it comes to staying in range.
I'm a few years into using cgm now, been T1 for 30 yrs, I think the big difference libre has made is that unlike the strip years, I feel more like I'm co-operating with T1 now, not fighting it.
Good luck!