Welcome! You are in very good hands here. We're all generally individual pool owners, many of whom have learned through the school of hard-knocks, and some who have extraordinary levels of professional expertise in the appropriate aspects of managing a pool. Lots of deep research and scientific reasoning for the methods noted here. No money being made - it is all free. Just donations asked to keep the servers for this site, and the associate phone app, running. One member runs his own small business selling pool test kits configured to meet what is needed using the methods outlined on the site, elsewhere - as you have discovered by ordering the great test kit.
The most important - keep your chlorine up!
Right now! Even a 24 hr low dip is a huge invitation to algae to start growing. Get a gallon of some liquid chlorine (Wal-Mart, Home Depot, etc.) and add it ASAP. Without knowing your pool size, in gallons, assume about 1/2 gallon per 10,000 gallons. We'll refine that once we know more details, and even more after you get the kit and can run all the tests. You ordered the Salt kit, so I assume a chlorine generator - get that fired up and running to keep the Cl (chlorine) level stabilized. But if your FC is low, it will need the bump from the liquid to get the levels back up quickly. If it cannot currently be run, continue with the 1/2 gal per day/10,000 gal, until your kit arrives.
Some homework for you while you wait for the kit:
As much as you can, add details about your pool to the signature line, as detailed here:
Create Your Signature - Further Reading
Helps us, and helps you from having to repeat basic information over and over.
Download the PoolMath app. to your phone, from your phones App store. It's free.
You can enter your test kit readings, and it will do the work to tell you how much of what is needed to bring the pool into balance. Consider subscribing ($8/yr), which will allow a running history to be kept, and if you use the same username as here, you can link it, so on this site we can see the history too! Helps you avoid lots of typing or photo shots of all the test numbers. Click on my user name to see my attempts currently to bring my pool into balance ("PoolMath Logs" button).
Whatever you need for learning about caring for the pool, or fixing anything that may not be optimal, we can help. The whole goal is to make it, as named, as Trouble Free (and inexpensive) as possible.