If you’re not sure how to change electric guitar strings, you have to know that, while some experts recommend changing them one at a time in order to keep the tension on the neck pretty much constant, there are others that advocate for changing all the strings at once.
You could say that there are pros and cons to both of these options, and because the necks of nowaday’s electric guitars are able to withstand much more pressure, you could change all of the strings at once without risking too much. Furthermore, doing this allows you to clean the fretboard and the guitar better.
If your guitar has suffered before, and if you know it’s neck has some problems, it’s better to keep the pressure constant on it and avoid changing all the strings at once, and that also applies if you are adding an affordable electric guitar string to a set of older ones.