What goes first, test or cleaning?

Welcome to the forum!
You need a proper test kit. I suggest the TF-100/Pro or Taylor K2006C. A proper test kit is needed to get the accurate water chemistry results needed to follow the TFP protocols.
Once you get the test kit, do as Griswald said, clean the pool, test, and post the results in a new thread in Just Getting Started.
I suggest you read through Pool Care Basics - Trouble Free Pool and even look at a few of our videos TFP-TV - Trouble Free Pool
 
Welcome to TFP.

What does your pool water look like?

What needs cleaning?

Get a real test kit and trash the strips.