Dearest to Christ Geoffrey,
I agree with the advice allready given to you. Contacting a priest at the suggested site is a good idea. Try it I'de say.
I have been in a similar situation, and due to reasons of privacy I am reluctant to share this here in public. However, you may contact me privately if u wish and I will tell you how things went for me and perhaps my mistakes can be usefull to you to avoid making them yourself. firstname.lastname@example.org
Just remember; Orthodoxy does not show in attempts to convert, or in succesfull debates, or any such thing. Orthodoxy shows in aquiring the Holy Spirit and in growing up in Christ. These things will show, and they will be testimony without words and arguments. Orthodoxy is a life in Christ, union with the Holy Trinity, and simply, humbly, living in an Orthodox way will be the most powerful and most convincing ' testimony' of your faith that you can give.
Don't seek to talk about it, but speak of your faith when invited to. First make Orthodoxy yours,.. Take the time to learn to live in an Orthodox way. The rest will come,..