Originally Posted by
Sam Grin
The basis for making music with a computer is a digital audio workstation (DAW). Some examples: FL Studio, Ableton Live, Bitwig, Logic Pro, Cubase, Reaper, Reason. With this software you'll be able recording, editing and mixing audio. You can download a demo of any DAW to start experimenting. There are many useful tutorials for beginners on youtube. Also I suggest you to read Bluebuzzmusic, it is a great blog about music production, it contains both material for absolute beginners as well as more complex things for musicians. Good luck!