Word allows you to insert and customize thumbnails in your documents. Here are the steps to insert thumbnails in Word:

1. Click on the "Insert" tab in the Word ribbon.
2. Click on the "Pictures" option and navigate to the folder where your image is located.
3. Select the image you want to use as a thumbnail and click on "Insert".
4. Click on the thumbnail image to select it.
5. Click on the "Format" tab in the Word ribbon.
6. Click on the "Picture Styles" option to see a variety of pre-defined thumbnail styles that you can choose from.
7. Click on the thumbnail style that you want to use.
8. If you want to further customize the thumbnail, click on the "Picture Border" and "Picture Effects" options to apply additional formatting.
9. Resize and position the thumbnail as needed.
10. Once you're satisfied with your thumbnail, save your document.

The answer to this question largely depends on your individual goals, interests, and career aspirations. Here are a few different computer science training options to consider Computer Science Degree: Pursuing a traditional computer science degree at a university is a great option for those who want to gain a deep understanding of computer science theory, programming, and algorithms. A degree program can provide you with a solid foundation in computer science, which can be helpful for a wide range of careers in software development, data science, cybersecurity, and more.

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However, if you have any questions related to graphics design or IT solutions, I would be happy to provide you with helpful information and resources to guide you in the right direction.