If you are willing to spend £4000 on a course, then I'd suggest spending the money more wisely, by buying A decent PC / mac. Ableton or Logic, a midi keyboard and some good monitor speakers. With the change I'd then buy some VST instruments and sample packs.
Then Id look around the internet at tutorials / youtube etc. Read up on basic knowledge and terms (You dont need to pay a fortune for a course when the internet is at hand, anything you want to learn is right here). I'd also spend alot of time around this forum, cant fault it, it's the best place to be to learn anything. Trust me, I learnt most of my techniques from this forum, and know alot of peeps on here who would say the same thing, I'm willing to bet Parsons here agrees with this too!
/\ This. Invest that course money into actual hardware. There are several online places where you can subscribe to amazing tutorial content/content (macprovideo, sonic academy, etc.) and of course there is the very forum you're reading this post in, which is a daily learning tool.
In terms of software to start producing with, they're all equal. Aside from the slightly different GUIs, the only difference is the kinds of "bells and whistles" they come with in terms of plugins, instruments, special features, etc. I would setup your shopping list to look something like this:
Computer. Decide PC or MAC and laptop or desktop. Both platforms have advantages/disadvantages, and for the love of God please don't ask which one is better or it will be World War 3 up in this mofo.
DAW Software. Pick your poison...Ableton, Logic (Mac Only), Cubase, etc. Download trial versions and see which one suits you.
Midi Keyboard. Cheap is fine for beginners, and it will help aid you in creating riffs...it's much easier than trial & error clicking in a step sequencer/piano roll.
Audio Interface. Realistically, your new computer's sound card isn't going to cut it. Invest in external audio interface (search the forums for recommendation and discussion). In a nutshell, the price of an audio interface comes down to two things: the type of preamps/converters is uses and the number of available inputs/outputs.
Near Field Monitors. Desktop/Laptop speakers just won't cut it. Buy a pair of quality monitors and/or headphones so you can have a better understanding your mixes.
Samples. Your newly purchased software will most likely be bundled with tons of samples, and there are lots of websites online with free, legal samples to use in your production. Don't be afraid to splurge on some sample packs for reference/inspiration. Again, search the forum for discussion on sample packs.
Patience. Yes, I know you can't buy it, but it sure as hell is priceless. You will not become Andy C. overnight, nor will you create the DnB anthem of the decade in one sitting. It's all about trial & error, educating yourself and listening to your tracks on decent sound system (even your car!). Be humble, and take seriously feedback or critique offered to you by others–never feel "disrepected" by it. The truth hurts, but it will make you rethink your production, in turn making you a better producer.
To sum it up: Fuck an expensive course. Spend that money where it belongs - on your newfound hobby. Use your resources to obtain knowledge and put it in practice.
Cheers.