The first step to prepare for UCEED is to go through the previous year's question paper of UCEED and previous years' question papers of CEED. The questions are mainly covered pertaining to topics like-analytical and reasoning skills, logical aptitude, design aptitude, general knowledge,english grammar and vocab, mathematical, quantitative and problem solving.

There are no any particular books but you can prefer NIFT, NID study material for the preparation.

Good Luck!