I LOVE this little book. Very compact. Everything you need to know about grammar. Honestly, you probably don't even need a textbook. If you're disciplined enough, use a dictionary to create vocabulary lists for building your Portuguese vocabulary everyday. This little book sums up all the rules you need for creating sentence structures. Essential Portuguese Grammar comes very handy either as a reference or a primary learning source. Author differentiates between Brazilian and European/Continental rules in grammar, as well as spelling and giving examples of common usage of each grammar rule. This book is a MUST-HAVE. I recommend getting a book on conjugated verbs as well, otherwise, just use the site I always do: [...]