Yay! Your site is launched and out in the world! Even though it's cause for celebration, keep in mind that your website needs to grow alongside with your business.
Keeping your site up-to-date is crucial not only for credibility but also for SEO. Everytime your site gets updated, search engines have to "read" the site all over again which tells it that the information is current and useful. You don't have to make changes every week, but shoot for updating the site once every 3-6 months at the least.
Here are some things to consider:
Create an Editor account through your new site.
Use the Editor to change text, photos, and update collections.
Don't forget to publish the changes, which will instantly update your site.