Are you a visual, auditory or kinesthetic learner? This means do you learn best through looking at the words yourself, through hearing them spoken to you, or through listening and seeing and associating actions or feelings with them.  If you've learned languages before, go back over how you learned them and see what worked for you and what didn't. In most classroom settings you will do a lot of writing, but less speaking. Speaking the language and immersing yourself in it is extremely important and a way to become more efficient at the language more quickly. In 90 days, you'll have learned about 80% of the language. The most common words make up the greatest percent of interactions, so start by memorizing the most common words.  Make sure that you keep practicing the words you've used previously, so you don't forget them as you memorize new words. The top ten most common French words are: être (to be, being), avoir (to have), je (I), de (of, from, by, than, in, with), ne (not), pas (not; step, pace), le (the; him, it (referring to a masculine singular noun)), la (the; her, it (referring to a feminine singular noun)), tu (you), vous (you, yourself).  Label everything in your house with the French word and make sure you say the words out loud whenever you read them. Make yourself flash cards and use them when you're on the bus, during commercials while you're watching t.v. or whenever you have a bit of downtime. Learn how the verbs work with nouns and with each other. Things that you learn in the beginning of French make more sense as you become more proficient in the language. Look at things like how the pronunciation works.  Grammar is incredibly important to learning a language. To speak it properly, you'll need to understand how verbs work, how present, past, and future tenses work, and how genders work with nouns. We say things forward in English e.x. The bathroom, whereas the french (and the rest of the world) say things backward, taking longer to say it e.x. the room of bath. Learn pronunciation. This is especially important with French, where to English speakers, the written words look nothing like the spoken language. For instance, French has vowels like "eau" which is pronounced "o" or "oi" which is pronounced "wa." You will need to know how these pronunciations work.
اعلم الطريقة المناسبة لك للتعلم. احفظ 30 كلمة وجملة كل يوم، وبهذا خلال 90 يوم ستجد نفسك قد تعلمت حوالي 80% من اللغة. تعلم تركيب اللغة.