Well I'm into orchestration myself (to be honest it's MJR who first inspired me to get into it a while ago when I listened to V and Odyssey and read some interviews...etc, and for that he'll eternally owe me

) so I may be of some help if you're serious about such an endeavor.
I'll just point out a few important things for now that I wish someone told me all at once when I first started:
COGNITION:
Cognition is of an utmost importance here, as Gentleman of the Snow advised, the first step is to listen... Whatever you can get your hands on, classical stuff, baroque, romantic, modern (okay this one could be a little harder to "get" especially at first, but if you want my advice DON'T let that stop you from exploring this fine and mind-challenging/opening art).
Film music is great too if you wanna go that way; personally, guys like Hans Zimmer, Howard Shore, John Williams, Jerry Goldsmith...etc have always been an open source of inspiration.
THEORY:
Also read, learn, and practice as much as you can, the things you have to train yourself into here are mainly composition, counterpoint, harmony, orchestration/instrumentation.
I'd recommend this free online course:
http://www.northernsounds.com/forum/showthread.php?t=45270
And here you shall find a good list of book recommendations:
http://decamusic.com/images/VI_book_recommendations.htm
TOOLS:
I'd say do yourself a favor and don't distract yourself with too much software stuff, you can literally spend the rest of your life in forums debating about which is the best orchestral sample library without actually learning about or making any music.
Just save up some money and get this stuff (by order):
1) A DAW (digital audio workstation): such as Cubase, Sonar...etc. This is where you write, record, mix, master your music: Indispensable.
2) A beginner's/student orchestral sample library (I personally recommand EWQL Silver Edition, or Garritan Personal Orchestra): A virtual orchestra at your fingertips, you're gonna enjoy this!
Once you have these, you might want to consider getting:
3) A midi controller (midi keyboard): my recommendation is M-Audio's Keystation 88es, or any other smaller keyboard from M-Audio: This will facilitate the writing/recording process.
4) Studio monitors (I also tend to recommend M-Audio's stuff here): Useful for mixing/production of your music.
*Learn how to use this stuff, and how to get the best out of it. Start here:
http://www.tweakheadz.com/guide.htm
That's all I can think of right now as a way of kinda summing it up for you.
Hope it helps a bit.
Cheers
