Well, I've actually done this - twice - so I'll answer as sensitively as I can. Yes, there are more appropriate sources of info out there and I completely understand why some of the guys here might find the question triggering... but I'm happy to share what I learned on my journey to become a parent.
[Trigger warning: conception]The best thing you can
both do is to eat healthily, keep as fit as reasonably possible, don't smoke, don't drink (or limit your intake as much as humanly possible) and keep your stress levels down. The more stressed you both get about it, the more difficult it is to conceive.
There are some good pregnancy-specific vitamin supplements out there: it'd be a good idea for her start taking them now to prepare her body. Look for ones containing folic acid, which helps prevent neural tube defects such as spina bifida. If she prefers not to take supplements, folic acid is also present in broccoli, brussels sprouts, asparagus, peas, chickpeas and brown rice. I would recommend she stay away from non-pregnancy vitamins and herbs, as some of them contain substances that could be harmful to a developing foetus.
And keep an eye on her menstrual cycle: peak fertility is pretty much half-way between periods, so make sure you concentrate your - ahem - efforts around that week. If possible, make several attempts per day during that week.
I seem to remember reading somewhere that it takes something like 11 months for the average couple to successfully conceive. So don't worry if it doesn't happen immediately, but do seek medical advice if you haven't conceived after a year of trying.
[End trigger]Oh, and the very best of luck to you both.
