This book was first published in 1918 and its intended readers were apprentices in the printing industry. So this book was meant for Englishspeaking youths, but this book is useful for people who speak English as a foreign language as well. The printed edition has 71 pages. This book is in the public domain, so it's available for free on several websites.
The contents are:
INTRODUCTION: IMPORTANCE OF THE SUBJECT
THE WORD FAMILIES
NOUNS
ADJECTIVES
ARTICLES
VERBS
PRONOUNS
ADVERBS
PREPOSITIONS
CONJUNCTIONS
INTERJECTIONS
GENERAL NOTES
RULES FOR CORRECT WRITING
THE SENTENCE
THE PARAGRAPH
RULES FOR THE USE AND ARRANGEMENT OF WORDS
COMMON ERRORS IN THE USE OF WORDS
TABLES OF IRREGULAR VERBS
SUPPLEMENTARY READING
REVIEW QUESTIONS
GLOSSARY OF TERMS
To give you an idea of what the book is like I copy the first three phrases of the bit about nouns:
A noun is a word used as the name of anything that can be thought of,
_John_, _boy_, _paper_, _cold_, _fear_, _crowd_. There are three things
about a noun which indicate its relation to other words, its number, its
gender, and its case. There are two numbers, singular meaning one, and
plural meaning more than one. [...]
Another example from this book, this one from the section on 'Common errors in the use of words':
Gentleman Friend_ and _Lady Friend_ are expressions which should be
avoided, say "man or woman friend" or "man or woman of my acquaintance"
or even "gentleman or lady of my acquaintance."
This book could be useful for people learning or brushing up on their English grammar and vocabulary. The book is dated however, especially the bits on words, so for serious studying you would probably be better of buying a recently published book.