I recommend getting it in the hands of someone who knows how to play guitar who can help you figure out if the “action” is properly set up. As a beginner it will be hard to tell if the guitar is properly set up to make it feel fun and easy to learn vs set up to be difficult to play for your particular hands and playing style you end up gravitating towards. There is also something called “intonation” that you should have a guitar person check for you or else things will sound subtlely off.

The biggest thing to keep in mind is you probably want to change the strings (it isn’t too hard watch some videos, remember to prestretch guitar strings so you don’t have to keep retuning). Change the strings every month or so and adjust for frequency of playing obviously. Something that will extend the life of your electric guitar strings is to realize that what really breaks them down is your skin oils and grime, wiping your guitar strings down real quick to get most of it off can help extend the life of your strings and keep their brightness in tone longer.

If your guitar refuses to stay in tune (note brand new strings will need to be retuned several times, this is different) the neck may be warped, this isn’t very easy to tell if you are a beginner but you can have a guitar tech adjust it if needed (there is a metal rod that goes down the center of the guitar neck that can be adjusted by someone who knows what they are doing). If this is happening, it isn’t something you should have to tolerate, a well set up electric guitar should generally stay in tune for awhile unless the weather is radically changing or something.

As a general rule, though this is less of an issue for electric guitars, don’t leave a guitar in conditions you wouldn’t be comfortable in a t-shirt, that goes for both getting very hot and getting very cold. DON’T leave a guitar in a really hot car on a super hot day or in an attic that is roasting in your summer or out in a car during a super cold night or you risk warping the guitar neck which is by far the most important thing to care for with respect to keeping your guitar working in good condition! Overall electric guitars are pretty tough, this is just general advice stuff. Electrical issues on your guitar are in comparison muchhh cheaper and simpler to replace or maintain in a somewhat paradoxical way… it is that beautiful wooden neck that is the heart of an electric guitar.