Documenting Electrum in full, the wallet and the server, will be a major part of the presently ongoing redesign of electrum.org.
There are a few video tutorials covering Electrum,
yenom's series on cool storage was particularly good. The book
Total Bitcoin Security also goes into depth. I'd like to incorporate as much of this as possible, and am looking for feedback / forks on GitHub.
What is Electrum?Wallet doc+faq outlineMan pages