it's possible, and tips depend on what you want to get: just spoken japanese, just written japanese, both, something else? First, i suggest that you should get familiar with japanese syllabaries to be able to read hiragana and katakana and with the sounds of japanese language. For understanding japanese grammar i suggest you read (read, read, re-read…) guidetojapanese.com If you want to be able to write (without the computer) or read newspapers/books/whatever then you should also learn lots of hieroglyphs which is quite hard and time-consuming Basically, that should get you started and then you'll be able to find learning materials for yourself.

that's what i did for like, my first year! it would be great for you to memorize hirigana and katakana. and even some kanji... but if you learn the same way i do, then you'll definitely need some interaction (and motivation) to make sure you understand the grammar and the pronunciation etc. but if you're fine with just getting an awesome book then you could get into that lovely grammar tangle! (i happen to ADORE japanese the manga way but....i bought it after i kind of understood mostly everything in that level...so i'm not sure if it would be helpful for you) but also, if you're like me, you might die out on your ambition if you don't develop a daily routine. lol you could label stuff around your house, you could put a "vocab of the day" on your mirror every morning.... it's definitely good to get started on your own! i could eventually get into a japanese class and i aced all my tests~~so go for it! <3 (but never rely on anime to teach you everything. please. trust me. just don't. XD;;)

yes it possible but it takes time. lyk i lrned hiragana in 3 months