I do not prefer books for essays to get ideas and then write onward. An essay is an art that can be grasped only via reading and then writing. This is an amazing and very easy task to learn and reach new peaks through the process of regular practice and its check-up or evaluation by renowned mentors.
To do so, I, only for the sake of my mentor Mam Noor ul Huda who once recommended us this book for a general idea of essays, bought and read this book. This was a fascinating idea, and when I reached its completion I further cemented my ideas about how to write good essays.
Regarding this book, I would say this book has explained the subject essay in a very specified, coherent, and clear manner. And I also recommend this book to those who are indeed beginners and want to learn essay writing, so start reading it now and with it start also writing something every day.
You can learn everything by yourself, but "art" needs a mentor.