I started with the kana, improved my ability to distinguish kanji (RTK), started studying vocabulary (Core) and grammar (from Tae Kim's Guide).
I think it's easiest to start with reading skills. I think vocabulary study is most easily done with premade decks and reading practice. Core isn't perfect, but you save tons of time using it over making your own decks, and reading will iron out any vague definitions.
I like saving money. Spending money on things I can get for cheap/free is just wasteful. Some people see it differently. Time is money, so I like saving time (actually, I'm just lazy).
So I suggest Tae Kim's guide, familiarizing yourself with kanji early (for ease of vocabulary acquisition, not writing practice; writing can wait until later unless absolutely necessary), using Core, and reading as soon as it's possible.
I think it's easiest to start with reading skills. I think vocabulary study is most easily done with premade decks and reading practice. Core isn't perfect, but you save tons of time using it over making your own decks, and reading will iron out any vague definitions.
I like saving money. Spending money on things I can get for cheap/free is just wasteful. Some people see it differently. Time is money, so I like saving time (actually, I'm just lazy).
So I suggest Tae Kim's guide, familiarizing yourself with kanji early (for ease of vocabulary acquisition, not writing practice; writing can wait until later unless absolutely necessary), using Core, and reading as soon as it's possible.