I used Moonfruit (www.moonfruit.com). My wife set it up and it was so easy that she did two of them (one for her business as well). This was her first time building a website and she is no expert when it comes to that. I hope this helps.
I also made my own web site using ‘Serif WebPlus’. If you just want to create an informational web site through which people can contact you, I highly recommend giving it a shot doing it yourself. The programs are made for the novices, and it is so much cheaper in the long run.
Most hosting companies (ie godaddy) have easy to use website builders but they aren’t very good if you need anything beyond static pages.
If you are looking for more advanced features you may want to use wordpress (free but you still need hosting).
Assuming you are a trainer, you may want some advanced features to train online or book appointments. Your best bet is to look at some premade templates which are built with wordpress. Check out www.fitprosites.com or www.trainertry.com. Both offer the advanced features and include hosting. I went with trainertry and it’s been great for my exposure online.