It's not easy is it - I'm in a very similar if not the same boat to you. Any power into the voice and cover your ears, plus I'm having another more determined go at learning the guitar too.
You want to start by looking through the DAW's forum area. There's a lot to choose from and I know you've said something to just get a beat down and record it - the basics. That means you want a package deal, where you will get music (often midi packs) included with the software. Now others will have different opinions and suggestions, but I think the simplest software to get the hang of quickly that comes with a load of drums and guitars etc you can use 'and' that down the road as you get more accomplished will still help you with what you're looking to do, is Mixcraft. A lot of the other DAW's are about creating music (I know quite a few guys who use Ableton for House type Live gigs etc) and then there's the ones for recording all instruments etc and then there are those that are more tuned in their way for producers. They all pretty much do the same thing Johhny. But they can be somewhat daunting, which is why I suggest Mixcraft, because when you open it up, choose a drum set, drag them onto the screen, copy and paste, extend or cut up parts etc, you should get the hang of it quite quickly and easily. next you'll be adding other instruments like a bass etc. So, what you really need to do is go to the Mixcraft site and look around (a good look), check out some tutorials on youtube to see how the job gets done using it, then do the same for any other suggestions and then decide.
I know where you are right now, because I've been there too and Mixcraft helped me understand quite a bit about DAW's and choosing a drum type etc through it's very simple and basic screen etc. Hope this is of help.