Sure, I'd be happy to guide you through the process of cleaning up your Spotify playlists. Here's a step-by-step guide:

1. **Open Spotify**: The first step is to open your Spotify app. You can do this on your desktop, mobile, or web player.

2. **Go to Your Library**: Once you're in the app, navigate to "Your Library". This is where all your playlists are stored.

3. **Select a Playlist**: Scroll through your library and select the playlist you want to clean up. Click on it to open it.

4. **Remove Unwanted Songs**: Now, you can go through the playlist song by song. If you find a song you no longer want in your playlist, you can remove it. On desktop, you can do this by right-clicking the song and selecting "Remove from this Playlist". On mobile, you can do this by clicking the three dots next to the song and selecting "Remove from this Playlist".

5. **Rearrange Songs**: If you want to change the order of your songs, you can do so by clicking and dragging them to their new position in the playlist. On mobile, you'll need to click the "Edit" button first.

6. **Add New Songs**: If you want to add new songs to your playlist, you can do so by searching for the song and clicking the "..." next to it. Then, select "Add to Playlist" and choose your playlist.

7. **Rename Playlist**: If you want to change the name of your playlist, you can do so by clicking the "..." in the top right corner of the playlist page and selecting "Rename". On mobile, you can do this by clicking the "Edit" button.

8. **Update Playlist Description**: Similarly, you can update the description of your playlist by clicking the "..." in the top right corner and selecting "Edit Details". On mobile, this is also done by clicking the "Edit" button.

9. **Save Changes**: Once you've made all your changes, make sure to save them. On desktop, changes are saved automatically. On mobile, you'll need to click "Done" after editing.

And there you have it! By following these steps, you can clean up your Spotify playlists and ensure they only contain the songs you want to listen to.