Welcome Sindy!
I send a big hug to you. A big tonic-clonic (grand mal) seizure is hard on the system and the psyche, especially if it's the first one. When you're first diagnosed, everything seems strange and scary, and there are a lot of unknowns. But you've come to the right place -- everyone here knows what you are going through, and the collective experience of CWE members is a terrific resource for you to draw upon. You're not alone!
One of the best recommendations I learned on this site is to keep a seizure journal. It can help you "fill in the blanks" and it can also help you keep track of medication, dosages and side effects. It's a great way to track potential seizure triggers as well. If you can record physiological data (like what you've eaten, or if you're unusually tired), you can potentially identify and avoid the things that can lower you seizure threshold. Fatigue is the #1 trigger, but there are other things like diet/metabolism, hormones, stress, flashing lights, etc. that can be triggers as well.
Now that you've started Keppra, it's a good idea to note how it's making you feel, and if it seems to be helping with seizure control. It can take awhile for the body to adapt to anti-seizure meds, so you may need ti to give it some time to get a handle on things. Some people have reported having mood swings on Keppra, and also that taking Vitamin B6 helped with that. If you notice yourself getting unusually moody, angry, or depressed, talk to your doc and consider taking the B6.
Best,
Nakamova