In general, there is no exact art in finding a medication that is a perfect fit for patients. They can look at the records on hand, see where it seems the seizures originate (electrical action in the brain) and degree of seizures. From the data on hand they can try to provide the best fit medication.
You will go stir crazy if you read about all of the medications listed to treat seizures. They ALL have side effects. Some more so than others. Some cause different symptoms (hair thinning, weight loss, weight gain) while still working to control the electrical activity in the brain to keep the seizures under control.
Look ahead just two years. DRIVING will be on the board. You will want to have the seizures under control, or close to that, by then. At that age not being able to drive feels like a jail sentence. Thankfully I was able to drive for a few years.
Come a few years later the body may change once more (as it did for me!) and you may have to change medications again to try and regain the upper hand in getting control.
I've been on medications since 1981; so most of my life. To me it's normal. Yes there's a part of me that would like to get off of them, but I know that if I stop taking my meds I'll end up in the Emergency Room on a mega dose of medications; and thats NEVER fun (just like after a GM).
So YES read up some on the medication you/your family will be using so you know what to avoid and the indications of problems (Lamictal for example is skin rash). What to do in case any show up (ex: Call Dr first; try loose clothing; luke warm rinse). However don't memorize medication reference books or the DSM, you don't need a headache or to cram your head with all that excessive information.
However, YES I've been on Lamictal, so thats why I know about it