This tutorial assumes you've already logged in to WHMCS
Now let's learn how to update your personal details
1) Click the My Details link

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This is the personal details page where we can modify our name, address, and more

2) Let's go ahead and make some changes

3) When finished, click Save Changes
 
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That's it! Â Our personal details have now been modified
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4) Click the Client Area link

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Our new updated personal details can be seen here

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This is the end of the tutorial. Â You now know how to edit your personal details in WHMCS