Is there a way to give first aid to someone who has epileptic attack?

DONT EVERY PUT SOMETHING IN THEIR MOUTHS, THAT IS AN OLD WIVES TALE. YOU COULD KILL THEM BY DOING THIS. They can and will bite something like a tongue depressor in half and choke on the pieces - thats a really really BAD suggestion. It is important to keep their airway clear.

When a seizure occurs, the main goal is to protect the person from injury. Try to prevent a fall. Lay the person on the ground in a safe area. Clear the area of furniture or other sharp objects.
Cushion the person's head.
Loosen tight clothing, especially around the person's neck.
Turn the person on his or her side. If vomiting occurs, this helps make sure that the vomit is not inhaled into the lungs.
Look for a medical I.D. bracelet with seizure instructions.
Stay with the person until recovery or until you have professional medical help. Meanwhile, monitor the person's vital signs (pulse, rate of breathing).

DO NOT restrain the person.
DO NOT place anything between the person's teeth during a seizure (including your fingers).
DO NOT move the person unless he or she is in danger or near something hazardous.
DO NOT try to make the person stop convulsing. He or she has no control over the seizure and is not aware of what is happening at the time.
DO NOT give the person anything by mouth until the convulsions have stopped and the person is fully awake and alert.

Call immeditately for first aid or medical assistance

Call 911 if:

This is the first time the person has had a seizure.
A seizure lasts more than 2 to 5 minutes.
The person does not awaken or have normal behavior after a seizure.
Another seizure starts soon after a seizure ends.
The person had a seizure in water.
The person is pregnant, injured, or has diabetes.
The person does not have a medical ID bracelet (instructions explaining what to do).
There is anything different about this seizure compared to the person's usual seizures

When the person is alert tell them what happened, many people are unaware that they are having seizures. Urge them to see a doctor or seek medical attention. If the person is driving advise them not to and call 911

the best thing to do is just make sure there is noting around them they can bump into until the seizure is over. Also, people having seizures tend to vomit. If they do rool them on their side to prevent them from breating in the vomit.
keep him from harms way turn on side call for help
I was always taught that you should find something immediately and put it between their teeth so they dont literally bite their tongue off. Books, tongue depressor, just becareful so it doesnt break off and go down their throat and cause more of a problem.
Make sure they don't bit their tongue but DON't put your fingers in their mouth. They should be lying on their side and watched for breathing!
Active licensed RN
Turn them on their side. Move them away from harms way - speeding traffic, water bodies, open fires, running machines etc. Don't try to restrain the convulsive movements.
Call for help.
Avoid forcing anything between the teeth. It is impossible when the person is already convulsing (unless you manage to break their teeth in the attempt) and needless when the fit has stopped. No body really bites their tongue off ; usually there are a few small cuts on the side that bleed a little and heal in a few days. If someone has a premonition of the fit (called aura) it would be a good idea to grab a folded handkerchief between the jaws before the fit starts.