A Basic Latin Vocabulary by J. Wilson & C. Parsons is a pretty darn good little handbook for a beginning Latin vocabulary. Words that are similar in spelling are grouped together so you can remember them better. For example, the book lists all the "post" words together, i.e. post, postea, postquam, posterior, postremus. It is a small, light, easily portable book that is very cconvenient for studying in the car or on airplanes or waiting in a doctor's office. Also, it does not contain too many words so you do not get overwhelmed. If you are interested in a good book for starting a basic Latin vocabulary, buy this one!