A quick tutorial on viewing first new posts, the opening post and stuff, clicking on the arrow pointing down will take you to the first new post for you, ie if you have read 16 posts it will take you to post 17.

If you just want to read the opening post then click on the cross and that will open.

If you hover your mouse over a thread title that will give you the first 25 to 30 words of the opening post.