Unless there is some reason to suspect that your pH is a problem, I still think it is nearly irrelevant. I tested my pH a week or so ago for the first time in well over a year. I only tested it then because someone had a question about pH dropping in the tank and trying to adjust it. It was 6.8 in my 75 gallon, 6.2 in my 29 gallon (both have driftwood) and 7.2 in my 2.5 gallon (tap is 7.2). All fish are doing very well and all tanks have been running for over 2 years except the 2.5 gallon which has been about a year and a half.
As long as it's stable, most fish will easily adapt to it. When pH drops and people say they lost fish to a pH crash, I think the more likely reason is lack of oxygen. A very low pH means water with a high CO2 content and very little oxygen. I'm sure both of them play a factor but the low pH isn't the only reason.
Bleeding Heart, it depends on what type test kit you have. And it you don't have the charts, you won't be able to tell much anyway. If they are liquid tests, you fill a test tube to the mark and put in the prescribed number of drops, shake and wait a few minutes for the color to change. Then you compare it with the chart to get your reading. With strips, you dip them in and immediately remove them, wait so long and then compare them to the the chart to get your results. Strips, however, are terribly inaccurate and if the kits are old, they may not yield true results either.