here is a step-by-step tutorial on how to use a slide rule:
1. Notice the gaps between numbers. Unlike an ordinary ruler, the numbers on a slide rule scale aren't spaced on an even, linear scale.
2. Look for scale labels. Each scale on the slide rule should have a letter or symbol identifying it, printed to the left or right.
3. Interpret the divisions of the scale.
4. Don't expect exact answers.
Here is a more detailed tutorial that you might find helpful . It explains how slide rules work for multiplying and dividing. Each number has a logarithm. To multiply two numbers, add their logarithms and find the anti-logarithm of the sum. Division involves subtraction of one logarithm from the other. A slide rule represents logarithms as distances along a linear scale. Add the distances to multiply.
: https://www.wikihow.com/Use-a-Slide-Rule
: https://www.instructables.com/A-More-Complete-Slide-Rule-Tutorial/
