You cannot add more than one gadget on the horizontal plane that the your pages are usually located on. However, we are going to use pages to allow you to organize your blog posts on different pages using labels.
1. Open your pages editor
2. Add a new page and click web address
Don't worry, we are not leaving your blog (unless you want to)
3. Insert this link and choose a label name
LINK TO YOUR WEBSITE/search/label/NAME OF THE LABEL
Insert your blog address (it will auto add http://)
Choose a label name to add to each post you want on this page. All you will have to do when you write a new post is add this label and it will be filed under this page. Obviously this link will not work until you label some of your posts.
4. Add your labels
Don't forget to add labels to your past and new posts under the post editor.
If you only want your posts to show up on your new pages rather than having them also show up on your home page, you can set your home page to show zero posts by going into the layout page, choosing the blog post edit button and changing the number of posts on the main page to zero.
*Update* I tried changing the post number to zero and it wanted me to have at least one post. I am not sure if this has been a problem for others.
And that is that. Done. Easy as making bacon in the oven.
I hope this is helpful and easy to understand.