I'm managing my company's blog and I'm trying to get the thumbnail images the way we want them. Right now I am using the plugin Thumbnail for Excerpts.
What I want to do is to create some code that gives me the same look but with three image-size options for the thumbnail. I know this is done with custom fields, but I'm not sure how to do it or where to start.
I know how to choose the thumbnail for each post, but in terms of structuring of the excerpt I don't know. Any help you could give would be greatly appreciated!