2005 Kia Sorrento Lx Wont Start

the other day after dropping a friend off my car wouldnt start. i went grabbed friend after several tries he got it to start the check enguine light came on. i drove home at once .  and the next  day i went to see if it would start up it did i let it run for a few min . i noticed the check enguine light was still on .i decidd to not drive it till i get to to get seen . well today i was going to take it in but it wouldnt START . any advice ? i cant get it towed to a place due to funds at the moment is there any advice or something i can check please any help would be great