BEWARE: This looks like a respin of text taken from other sources: the text was plagiarized and then put through software to obfuscate the plagiarism (by replacing the original text with clunky rephrasings and approximate synonyms). This book is more or less unreadable because of the garbled syntax and meaning. An all-around sketchy book (even the "author's" name is spelled differently in different locations--check the back cover preview on Amazon).