How the heck do i get to start of thread?

Hi there…may be its juz me being a bit thick…but for example…if i look under Trading systems I always appear to get say number 325 as the start of the thread…how the heck do i get to number 1 to tell me the start of the story…ie what the system actually consists of in the first place?

Regards Kevin

Go to user cp > edit options > thread display options > (change to)
linear-oldest first.

or if you prefer oldest first hit the last page option which comes up automatically