Can I upload media and pictures?

You should resize larger images before you upload. A width of 2000px is a good guide, and use a consistent 4:3 or 16:9 format ratio in landscape. Smaller images are aceptable in some circumstances, but beware they won’t look so good as featured images, the format of which will be dictated by the template you use.

Ensure that you have permission to use any images that you publish. Use photo sharing sites if you have significant image management demands. Use document sharing sites for very large pdfs.

Your free site is limited to 256Mb or 256 images of 1Mb. Although the upper size limit for a single image is 10Mb, self evidently shrinking images is a good idea if you are using the free plan and want to have more than 25 images at max size. A paid plan opens up the ability to add to your website storage needs, £75 = 1Gb or 1000 images of 1Mb.