A person who wants to obtain a Czech permanent residence permit needs to pass an exam in the Czech language. Currently (in 2020), it is the A1 level, although it is going to be changed to A2 some time soon. (As far as I know, it has not been confirmed yet.) However, to achieve the A2 level, you need to master the lower A1 first, anyway.
In this little book, we'll focus on the verb BÝT, that is TO BE, as the basic and most frequently used verb in Czech (and probably in most other languages as well). This is intended as a self-study handbook, perhaps close to phrase books, but it concentrates on what you need for the A1 exam.
Besides some basic information about related grammar, you'll find many many examples of the verb's use in the context of the A1 exam, so when you read through this book, your vocabulary will be much richer and you'll know many useful words and phrases, not just the verb BÝT itself.