R honda

Ive got a problem n need some help.... what it is i have a 1.4L civic n sometimes a go to start my car it wont start everything works but it jst wont start n wht a have to do is turn the ignition on n off several times before it works again . wht happens exactly is whn u put the key in and turn it as u do there is no starter motor sound its like a havent got one but the thing is it works ok . Basically wht im askin is i want to know wht relays or fuses that could cause this problem or any other known faults tht can relate to this problem ?????? if u need any more info on car details jst ask but im sure use already know wht car it is lol thanks