Do /warp tradeshop in game and it will show you a tutorial

Or you write [Trade] on top line of sign.
What you are selling on 2nd line
How much for the item on 3rd line
Your ign

Like this:
[Trade]
1 Diamomd
20 Grass
TheTastieDough

if it doesn't have what I need to know I'm getting you in-game and making you help me

no access to computer. Sorry

I think I got it anyways cx

nope, the woods are confusing me. DO you just put the ID in or like ''Oak planks''?

Write this: <Number of oak planks> OakPlanks

id works too