Could have a look at this one AStickyPostOrderER can also search that page for "sticky" and it will return a lot of results
Is that possible i make some category post stick on the category ?
for example :
post 123 on category A, when user click on Category A and sticky post will appear in the on the top or first list .....
Do i need any trick ? or base on theme ?
WP-Sticky can be used for this purpose. I'm unsure if a post can be made 'sticky' for its particular category but it can be made sticky for the day(Sticky) or forever(Announcement) using this plugin.
The Secret Definitive Guide To Finding Tons of PR4-PR8 Backlinks with ease <== Boost Your Website Rankings Overnight