You can curve a path quite easily using control handles in Illustrator. Explore this technique in detail this tutorial. Watch more at http://www.lynda.com/Illustrator-tutorials/Illustrator-CC-Essential-Training/122469-2.html?utm_campaign=m9CQGKjo9jI&utm_medium=viral&utm_source=youtube.
This tutorial is a single movie from the Illustrator CC Essential Training course presented by lynda.com author Justin Seeley. The complete course is 8 hours and 1 minute and shows you all you need to get started in Illustrator CC.
Introduction
1. Getting Started
2. Working with Documents
3. Selecting and Transforming Objects
4. Working with Color
5. Working with Fills and Strokes
6. Working with Paths
7. Creating Shapes
8. Don’t Be Afraid of the Pen Tool
9. Using Type in Illustrator
10. Adjusting Appearance
11. Working with Layers
12. Working with Images
13. Creating and Using Symbols
14. Drawing in Perspective
15. Printing, Saving, and Exporting
Conclusion