I have recently been interested in hiking.  Do you have any experience hiking?
I have some experience in hiking, a long and vigorous walk.
Do I need to get special shoes?
I would think you would want shoes to support you so you don't roll your ankle. 
Thats a good point.  I don't want to hurt myself!
If you are looking for something to do on the weekend, a day hike would be good because you finish it in one day. 
Should I bring lots of water?
It would depend on how far you are going as to how much water to bring. 
I think I will plan on a half day hike!
There are so many health benefits to hiking, I think a half day hike would have some as well!