I assume you Googled it, read some of the links and found them wanting. Would you like to tell us what you've read and where each is lacking? The alternative is to have us guess.
I need to gather more information on the Casimir effect. I have googled it and read some papers on it, but I still want more information on it. I ask for a source that maybe I am unaware of and it offers a lucid explanation, instead you refer me to a blog that explains how to ask for help.