Good for you. Having enthusiasm is probably about 90% of what you need in this hobby. (The other is having about 5x the money you initially thought you would spend)
You should get a tripod no matter what kind of shooting you do. They are really really useful in lots of situations. If you are going to do any macro, you probably want one that will splay out low to the ground and that has an articulating stem to hold the camera in whatever weird position you need to shoot your little things.
Here's the one I am going to get. http://www.bhphotovideo.com/c/produc...m_Lateral.html

Oben seems to have some kind of arrangement with B&H, because they sell for less than comparable tripods, and B&H seems to prioritize them in their search function. I bought their monopod and it is great. You have to look at the weight ratings too, and these will hold up an elephant compared to most others in the price range are rated for.