The two above explainers were both created by me on Piktochart.
Here are links to them:
https://s3.amazonaws.com/pikto-render/2PSxnzJjzKI76vc.png
https://s3.amazonaws.com/pikto-render/GGlptxR58V5m8iA.png

But there are some other explainers on Dickens by other people that you might also find interesting:

By the Guardian newspaper, there’s an infographic gauging the “Dickensian” qualities of Dickens’ novels: http://www.theguardian.com/books/interactive/2012/apr/19/which-novel-most-dickensian

Another, is this character relatedness map for Great Expectations, which might make the novel easier to understand or serve as a refresher for someone who hasn’t read it in a while: http://www.insightpublications.com.au/pdf_preview/TG-Great-Expectations-10-pages.pdf

Thank you!