How to read facebook timeline?

[me]

In order from newest to oldest posts, do I read them left-right, then left-right.
OR do I read the posts up-down, then up-down?


How is timeline supposed to be read?


Also, when I want to comment on a lot of birthday posts, will commenting on that one thing respond to everyone?

[Berry]

Okay to see which post is older or newer then the other one, look at the line that separates them.
The post are big speack bubbles, the little triangle thing is next to a dot on the line that sperates them, the dot 1st shows the 1st one etc.

[abraXus]

see the "line" down the middle?

see how each item has a little arrow that connects to a dot on the line?

that arrow shows you the order of each item/story

the most recent is at the top