This is Russell reviewing his philosophical foundations. The Problems of Philosophy is a good, short overview of basic philosophical questions. For example, the relationship between reality and appearance. Russell introduces the reader to metaphysics, epistemology, and logic.

For readers who have no experience reading philosophy, this is a good introduction to basic philosophical scepticism.
The book is short, this edition is pg. 161, and so any difficulty in reading it can be endured. For beginners, it is worth the work to read. For those folks who have slogged through undergrad and grad philosophy courses, or who are (like me) simply nuts and like the pain, this book is a good reminder for why we love what I view as being one of humanities greatest endeavors: tackling the problems of philosophy.