The Website http://www.fertilityfriend.com/ is a super useful tool. It's a wealth of information and a great place to keep all your information regarding TTC. It also allows you to chart your daily temperatures and all signs & symptoms which is great!
For a Basal Thermometer for daily charting I recommend the Mabis thermometer that you can get at Walmart.
Ovulation Predictor Kits (OPKs)
I highly recommend buying internet cheapies from somewhere like ebay or amazon. Then when you think you might have a positive double check it with a digital. My favorite digital is Clear Blue Easy. It gives you a little happy face which makes it much easier to read than 2 lines. They always have coupons, which help bring down the cost.