usbasp programmer problem

I bought usbasp programmer and i tried to program atmega 8 using extreme burner. it worked for the first time but when i tried to set fuse and try it again it give me error message. it failed even without setting fuse. I don't know how to use it.

I would start by downloading the manual and reading it.

Perfect suggestion if I had it ? It is local I don't have the manual do you?

I see this type of USBasp for the first time but frequent problem with USBasp is in slow SCK, jumper must be on for raw chip programming due to default low clock frequency.