Congratulations!
I have had my iPhone 5S for about 14 months now and I love it. The app I use the most of is the NKJV Holy Bible app for following my pastor on Sundays. It is an easy application to use. I also use CCTC app for on a daily basis for really great audio Bible studies, the Weather app and Craftsy for sewing classes. I can set my iPhone near my sewing machine and follow a class on there in my home using my wifi connection. For the most part I use wifi and don't burn up data usage. I put off buying a smart phone because I didn't think I needed it but I use it constantly everyday.
The best thing is that I can write a note in the notes section and KNOW where it is when I need to refer to it. I keep a running Grocery List on there. I also have a note titled Crafts so I can write down what items I hear about which pertain to sewing, quilting or crafts. Have fun.