It's been more than a month since I last posted! I don't know why, but I guess we just haven't had that much going on, so there hasn't been anything interesting to post.
We bought our supplies to build the bed at Home Depot. We decided we wanted a rectangular garden 4 feet wide by 6 feet long. To accomplish this, we bought one 12' board and one 8' board and had them cut them in half at the store. They will do this for free, so be sure to take advantage of this service! Also, when buying your wood, avoid any treated lumber, especially pressure-treated wood, which could seep chemicals into your garden. You definitely wouldn't want that if you are planning to eat the vegetables that you grow. We selected kiln dried pine which cost about $30, here and here.
The next step is optional, but was necessary for us. We have tons of rabbits that live in our area and if not protected, they would likely eat our plants before they even had a chance to grow. So, we needed to create a barrier that would prevent rabbits from getting in, but still allow us to get in and tend to the veggies.
Now we just wait for our veggies to grow! :)