Learn how to read Latin. Latin is a phonetic language, which means every word is pronounced as it is spelled. Memorize the sound of each Latin consonant and vowel and how they combine, and practice reading Latin documents.
Study the grammar of your mother tongue. Latin is a dead language, which means nobody really speaks it in everyday life. It is a very rigid language based on strict grammatical rules, so you'll need a solid understanding of the grammar of your own language before you learn Latin grammar. Learn what nouns, adjectives, adverbs and verb tenses are. If you are comfortable with these basic blocks of language, learn the rules that regulate how words are arranged in a sentence, also known as a language's syntax.
Study Latin grammar. Latin grammar is probably the hardest aspect of learning Latin for beginners because there are terms and concepts not found in many modern languages. For instance, Latin words will change their form depending what function they play in a sentence. To illustrate, the Latin word matella, which means chamber pot, will change to matellam if it is used as a direct object in a sentence. If you do not know what a subject or a direct object is, see step 2.
Increase your vocabulary. Reading Latin and understanding Latin grammar is of little use if you have to check the meaning of every word in a dictionary. Buy or borrow a Latin lexicon and learn as many new words as you can.
Practice reading and translating Latin documents. Using Latin documents will not only help you remember why you started learning Latin in the first place, but it will hone your newly acquired skills. Classical works of Cicero, Caesar and Tacitus are great texts for practice, as are Latin translations of the Bible and legal documents, such as the Domesday book.