An additional tip is to read as if you're a part of the book. So when you're reading the dialogue by the characters, put some feeling into it. This way, you'll get some practice as if you're the one conversing. This will help you practice intonation and proper pronunciation.
A good tip is to stop yourself from re-reading phrases and sentences. This can become a habit and can result to longer reading times. If it becomes a habit, it would actually result to lower comprehension.
If you're reading a book, it's a good idea to summarize to yourself each chapter. Just talk to yourself on what the chapter is about. If it's easy for you, then it means that you comprehended what the chapter was about.