From where i am, there are NO courses for Japanese within 300 miles. Which is very bad. People get the impression that it is to difficult to learn, but it really is not any differnt than most other languages.
I'm still very new, and I am self taught, however, i do feel I have made progress, which is noticeable.
RTK1 really is a great starting point. It is so much easier to reconise Kanji, once you know how to write it and break it up into primitives.
You'll also notice (if you have used Genki a little etc) That you can piece togther very simple sentences very fast.
Such as
私はテレビを見ます。
私 = watashi - I
見 - mi(ru) - to see
(I watch television).
Dont be afraid to learn "plain" japanese either, it is way more natural and many sites do focus on it first. You need to know the differnces.
I reccomend the Remembering the Kana also, it takes about 1 week each to learn hiragana and Katakana which is Vital. Furigana (kana above Kanji) helps to learn readings etc later on.
http://www.timwerx.net is fantastic for teaching you basics.
Such as:
私はテレビを見る。
I watch Television.
But notice how it is slightly different?
I have been asking laltly what to do after RTK1. There are many plans out there i think i will go with AJATT which basically means going out there and getting thousands of sentences to "mine". Doing everything you can in Japanese, such as play games in Japanese, change your OS language to Japanese etc These forums will help you understand all that
Get a SRS too, Anki is popular. You can download a Heisig deck and start to work on the Kanji you reconise.
Get a HUGE pad paper too to scribble your Kanji down. After a while, it will be second nature.
At 25 Kanji a day with RTK1, it is said to take around 6 months. That really is NOT long for 2000 kanji, and it is possible. Then you can focus on readings.
I agree with Jav on not stopping learning Japanese. I find it atually helped. I use Genki, JPOD101, Japanese From Zero 1,2,3 and some Grammar books. Just remember to sey aside 30-1 hour a day for Hesig, and focus just on that in that time scale, dont get distracted.
if you have an iPhone, there are loads of apps out there which are fantastic to learn phrases.