Question

we should get well qualified people to write readable books on art. (make it complex)

Answer 1

Given simple sentence :

   We should get well qualified people to write readable books on art.

To convert the given sentence into a complex sentence :

   We should get well qualified people, who write readable books on art.

 
Here  we converted the second part :  "to write books on art " into a clause.

Answer 2

☺Heya !

here's your answer :

sentence in simple form :
=> we should get well qualified people to write readable books on art.

sentence in complex form :
=> we should get well qualified people, who write readable books on art.

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hope it helps ! ^_^