There’s not much to a seatpost. It’s just a stick with a seat on one end and a bike on the other. But while riding without one is entirely possible, it’s not something you’d want to do for any length of time. And the humble seatpost is entirely responsible for maintaining your seat in an efficient and comfortable position, and that’s worth putting a bit of effort into.

seating
seat 1

 

 

seating
seat 2

 

 

seating
seat 3

 

seating
seat 4
seating
seat 5
seating
seat 6
seating
seat 7
seating
seat 8

From there, go ride and fiddle with the fore-and-aft position until things are comfy. There are no hard-and-fast rules, although most people run their saddles either level or very slightly nose-down. Also bear in mind that you tend to try and sit in a comfy position regardless of where the saddle is, so if you seem to be sitting right on the front of the saddle you probably want to move the saddle forwards and vice versa.