Hey Andrew, welcome to ActoGuitar
Pitch pipes are kind of hard to use, in my opinion, because you need to blow through the pipe to make a note, and then match the sound of that note with the sound of your guitar string
by ear. This can be kind of tough. A much easier solution is a guitar tuner, which tells you if you are out of tune or not, and whether you need to tighten or loosen your string.
For
product advice on tuners, click here. Or, if you have any other questions, don't hesitate to ask.