These scary seizures

This is my first entry and I am hoping others can share their experiences with seizures. Chico turned 7 on Aug 3rd, and on Aug 26, had his first seizure. The second seizure was 4 weeks later and I thought I had seen the last of them. 6 months later, March 27th at 4 a.m., had the 3rd seizure, and 12 hrs later, the 4th. I am very worried and will not have the money to take to the vet for testing until later this week. Please share whatever knowledge you have.