Making Categories within a blogspot

Blogger, unlike WordPress, doesn´t have Categories – a kind of contents of your blog . This is very important thing because your posts should not only be ordered hronologicaly on the main page but also hronologicaly within the categories. One blog can deal with a lot of your interests (sport, music, art ...), and your visitors will love if posts are categorized.
Some time ago there was a skript for tweaking around (which never worked for me). Now, you can "Add page element" for your sidebar. Choose "Labels" and name it "Categories".

To get new Categories to shown up, after writing a post, put also "Labels" - a word which will be a "subcategory", ie: "Music" or "Sports".