Good coding font for Windows: Consolas

 Example:

The quick brown fox jumps over the lazy dog

1234567890

Disable spell check in a specific document

 Use Word Options> Proofing and at the bottom of that dialog, select the document name from the drop down and check Hide Spelling errors and Hide Grammar errors in this document.

Source: https://answers.microsoft.com/en-us/msoffice/forum/msoffice_word-mso_other-mso_2010/how-to-disable-spell-check-in-a-specific-document/0ecda102-775f-e011-8dfc-68b599b31bf5