1. The first step is to open the email with the link or file.
The main goal is to get the file in to Google Drive then click Open With, Docs

How that process looks can vary.

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2. Click the link

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3. Click download.  

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4. Choose a place you can find it easily, like the Desktop.
Click Save

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5. The next goal is to open Google Drive

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6. Click Google apps

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7. Click Drive

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8. Click Options menu

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9. Click Show in Finder

This may look different depending on which browser you use and what type of computer.  The goal is to find the file.

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10. NOT SHOW:

Click and drag the file into Google Drive so the file begins to upload to Google Drive.

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11. Doubleclick the file

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12. Click Open with

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13. Click Google Docs

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14. You're done!

You can now edit the file.Preview & Finish

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Interactive tutorial