Maybe today is the day I learn to post scanned pictures to use on my blog?

I have delayed posting a new blog thinking each day I will master the process of scanning magazine photo tear sheets and photos to use on my blog. I purchased a new scanner this week. I have mastered scanning but the problem seems to be getting the scanned file to my blog. For some reason each time I click upload the photo, it tells me there is an error... an error I have yet to identify or resolve. I have so many wonderful magazine tear sheet photos I have collected for over ten years and plenty of photos that I want to add to my blogs. Please have patience with me!