The best way to get in contact with me is to send me an email at firstname.lastname@example.org. You can (usually) expect a reply within 24 hours.
Feel free to email me about anything related to my work: questions about my research, papers that you think I might be interested in reading, invites to conferences, etc.
You can find me on Twitter @HJ_Hutton. I don't tweet too often but I do check in regularly so you'll get a response pretty quickly.