Let me preface this book with a few very important points.

1) This book in only intended as a general overview to the many Halochos (laws) of the Arba Minim (four Species). In no way should it be used to render a final Halachic decision (where there is a Machlokes (argument). This is something that must be left to a competent Rov who has a clear knowledge of the many different opinions and the many variables that make up the final Psak.

The Pri Megodim says that while the laws of the Esrog are very complicated, there are few Rabbonim that are knowledgeable enough to render a proper Halachic decision. Certainly this cannot be left to the discretion of the reader.

2) One must be aware that the Halacha can sometimes change, as in the case of a great financial loss -hefsed meruba - or perhaps because of the great shortage of these species. However, I've decided to omit this type of information for two reasons:

a) In America and Eretz Yisroel these four species are extremely common and therefore these Halochos are rather rare.

b) The question of hefsed meruba - great loss- is one that should be left to a Rov and not to the discretion of each individual reader.

3) I've tried to narrow down this book to the more commonly found problems and therefore left out some Halochos found in Shulchan Aruch that are quite rare nowadays.