Prepare and practice what you want to say when coaches call.
That first college recruiting phone call is pretty momentous and hopefully, there will be more after that. To make the best impression on a coach who may be recruiting you, you should be prepared for this call. Think through what you want to tell them about yourself, why you're interested in their program, how you can add value to it, and what questions you have. When they actually get you on the phone, you may be nervous and it will be hard to come up with all of this on the fly. This is especially true if it's a coach from a school you're really fired up about. Write it down and keep it close.
Another thing you may want to consider is role playing the conversation with a friend or parent ahead of time. This will give you practice and help build your confidence.