Thanks
 

How do you thank someone? I can't find the button please help

Just keep making posts, once you've made a certain number of posts the button will appear. At least, that's what happened for me.

It is going to be in the bottom right corner of the post, next to quote and Q.R.

Oh, I think I have it now, it's the little blue and orange rectangle on the bottom right of a reply, right?

Yes that's exactly it

Yes it is all the way on the right and it says thanks on it

It's right next to the Quick Reply, Multi Quote and Quote tabs.

Do you know how many post you have to write before the button appears?

According to MoodyKat's posting history, you have to post at least four (4) times in sections where the post counts towards your total Posts count. Though, I have no confirmation to back this information.

Almost correct

3 posts will unlock the thanks feature. (Currently)

Maximum of 4 thanks per day (currently)