The following only applies to the desktop version of Word. You will not be able to access all these features with the web version of Word. For instructions how to download Word for your desktop, please click here.
Create an AutoText Entry
STEP 1: With a document open, highlight the text you want to make AutoText.
STEP 2: Press Alt + F3 to bring up the Create New Building Block dialog box
STEP 3: Give the AutoText a unique name and description to make it easy for you to find and use. The other defaults should be fine.
Use AutoText
In any open document, go to the Insert Tab, click on Quick Parts, then AutoText. Hover over the block to reveal the name and description you created in the previous steps.
Configure AutoCorrect
STEP 1: In Word, go to the File tab, then select Options which should be at the very bottom of the File menu
STEP 2: In the Options dialog box, click on Proofing, then click on AutoCorrect Options
STEP 3: On the Autocorrect tab, select the Replace text as you type check box, if it's not already checked
STEP 4: Under Replace, type what you would like replaced and then add the replacement text under With
STEP 5: Click on Add, then Ok and Ok again
STEP 6: Try it out. Type the "replace" word in your document, then click on the spacebar. Did it work?
Click here for Microsoft Support for AutoText and AutoCorrect