Hi @pmacdonald,
I hope you are well today and thank you for your questions.
Is there a way to customize the amount of projects that show on the home page?
You can customize it by using the solutions posted in the following topics.
https://colorlibsupport.com/t/portfolio-responsive-columns/
https://colorlibsupport.com/t/changing-number-of-tiles-portfolio/
https://colorlibsupport.com/t/portfolio-grid/
Is there any way to filter out projects based on category for this page (example: Websites, Emails, Print)? http://www.pmddesign.com/new-site/portfolio/
You can use Portfolio Shortcode to achieve this as described on the following pages.
Best Regards,
Movin