I've only been TTCing for 2 months but one thing I'll say is - you WILL become obsessed by it for a bit and you WILL symptom watch obsessively. So don't worry too much about 'relaxing' right now cos you probably won't be able to!
But after a coupla months, things start to chill a bit and once you realise, on average, it can take up to 6 months to conceive, you'll realise that the best thing to do it enjoy the first 6 months.
And actual tips - well, the obvious ones. BD as much as you can (but every day can wear out the sperm so every other day); make sure you deffo BD around the time you're ovulating (2-3 days before as well, not just on the day); deffo take folic acid and, if you can, zinc, magnesium and vit b6 supplements (you can buy them all in 1 tablet); try to be at your best weight - eat healthily and exercise; cut down smoking and alcohol. Oh, and according to medical reprts, eat 2-3 helpings of full fat ice cream a week (am not kidding, google 'ice cream fertility' and you'll see!!! It was front page of The Times here in the UK a few months back!)
Good luck!