In the menu on the left you can click links to the download pages on thinkingwithportals.com.
Down here you will see a very short description of the map!

Mel: Paint fling

Map #6 in the Portal Stories: Mel mod.

Mel Paint fling is a map that involves Speed gel, bounce gel one cube that has various purposes...

Difficulty: 7/10

Mel: Run around

Map #7 in the Portal Stories: Mel mod.

A completey new version of sp_enrichment_1... but with quite a difference!
Features turrets, hard light bridges a funnel and a cube...

Difficulty: 5/10not interesting download link don't click it unless your name is Fourth Reaper

Mel: Just one laser

Map #14 in the Portal Stories: Mel mod.

A very easy puzzle, just aim one laser to one catcher and you're done...
Oh, wait... First you need to solve some other puzzles...

Difficulty: 8/10