What kind of carburetor is it?
You only need to do a little reading and learn about the different systems of the carburetor and how they effect performance/drivability/economy.
There are variations, but most all carburetors have:
A fuel bowl system with a float and needle and seat to maintain a constant fuel level. Setting the float level properly is the first step in calibration.
A main system consisting of a main jet and venturi. As the fuel speeds up to make it through the venturi it creates a vacuum that draws fuel through the main jet.
A power enrichment system of some description. This allows for a richer fuel mixture as the vacuum goes down. The lowered vacuum means an opening throttle and added cylinder pressure requiring a richer mixture.
An accelerator pump system. This is to squirt raw fuel proportionately as the throttle is opened so as not to introduce a lean condition from a rapidly opening throttle with no additional fuel to maintain proper mixture.
All of these systems are incorporated in one form or another in most every auto carburetor. In small engines they usually get much simpler. With some foreign engines, you will have a different way of achieving it in slide type carburetors.
When dialing in a carburetor, most of these systems interact. Always make ONE CHANGE AT A TIME in the calibration process. If you change more than one thing at a time, you can quickly get way out in the weeds and not know what's going on.
Even though it's brand specific, the best book I've seen for learning the fundamentals is an HP book on Holley Carburetors first published about 1970 or so. Even if you never put your hands on a Holley Carburetor, this book would be an excellent source for learning the fundamentals of carburetion.
One other thing. Many, many years ago I read a book on auto maintenance. When it came to the chapter on carburetion, there was one paragraph which said something like "Carburetor is a French word that means DON'T MESS WITH IT."
Don't pay any attention to that chapter. Learn how a carburetor works and make it perfect!
Hope this helps.