I'm sorry, but the whole "signed messages" thing has me stymied. I understand the results of signed messages (sending verifiable transactions) but I cannot for the life of me figure out how to do it? I have been using google to try and get some easy to understand information and how-to's about this feature, as I have heard a lot about it for a long time and realize its importance, but the only stuff I can find involves writing in codes and going in to json files etc. which I have no understanding of. Is there a "for dummies" explanation of how to sign messages? something non-programmers might understand?
It should contain;
1. clients that allow this function
2. step by step procedure for signing messages

even the btc wiki on it is way out of my depth.

I'm sure I am not the only one here, ANY help would be greatly appreciated

How can I sign a Bitcoin message?
Please log in to your My Wallet account, navigate to the 'Receive Money' tab, and click the Action option.