Where in AWS console I can see all instances/other active objects?

I learn AWS and its services and I create Free tier eligible ec2 instance
I wonder how to learn service without pay?
I know when I can check current billing for some period.

But if there is a way to check which ojects are active now?
Examples: I created new instance under some location, but after I changed location
in instances page and as newby I lost that instance. later I found that I have created 2
instances under different locations, but if there is a page where I see all instances/other active objects?