
free stock videos and images
Pexels: This website offers a large collection of high-quality, royalty-free stock photos and videos.
Unsplash: This website offers a collection of beautiful, high-resolution photos that you can use for free in your personal or commercial projects.
Pixabay: This website offers a wide range of free stock photos, vectors, and videos that you can use for any purpose.
StockSnap: This website offers a collection of high-quality, royalty-free stock photos that are updated daily.
Freepik: This website offers a wide range of free vector graphics, photos, and icons that you can use in your designs.
Videvo: This website offers a collection of free stock videos and motion graphics that you can use in your projects.

Free mockups
TheMockupClub is a website that offers a variety of mockups for product and branding presentations.
Canva is a graphic design platform that allows users to create and customize designs using templates, graphics, and text.
Placeit is a website that offers a wide range of mockups, including product mockups, logo mockups, and website mockups.
House of Mockups is a website that offers a variety of mockups for product presentations, including packaging, branding, and digital products.
Artboard is a website that offers a range of mockups for product presentations, including packaging, branding, and digital products.
Adobe Stock is a stock photography website that offers a wide range of high-quality images, including mockups for product presentations.
Creative Market is a website that offers a variety of templates, including mockups for product presentations, as well as other design elements such as graphics, fonts, and themes.

Websites to design your digital content:
Canva: This platform offers a range of templates and design tools to help you create professional-quality graphics, posters, and social media content.
Adobe Creative Cloud: This suite of design tools includes popular programs like Photoshop, Illustrator, and InDesign, which you can use to create a wide range of digital content.
Piktochart: This website offers templates and design tools to help you create infographics, presentations, and other visual content.
Venngage: This platform offers a range of templates and design tools to help you create infographics, reports, and other visual content.
Gravit Designer: This is a free, powerful design tool that you can use to create logos, graphics, and other digital content.