Hello guys,I want to know how to build a nano quad,like Hubsan X4.The thing is that I don't have any experience for nano,but I have built a normal quad before.I need to know what kind of flight controllers,tx and rx,motors,FETS,and batteries used for this project.I want to know price all the parts,and I want to know how FETS behave as ESCS for nano.

A simple google search gets you far my friend!
Better than waiting 3-4 hours for a forum member to reply, ain't it?
Found in ten seconds using google.
https://oscarliang.com/build-fpv-micro-quadcopter-smallest-quad/
All of what you asked in one link of webpage link!
Regards

thanks for the reply,I did google about the nano(or micro),but I couldn't understand anything,I want one of you to share your experience.It really helps alot!