These CGP guides are very good and cover all the important points.The text is always very busy with a lot packed in which is great but may not suit all learners.Definitely recommend especially for the price.
So glad I bought this.One of the best revision guides I've seen. Covers all topics well and with tips. Have struggled to get good quality textbook for the Edexcel iGCSE for my daughter and wish we had found this earlier. Don't hesitate to buy.