If you have a PC then get yourself a good external MIDI/Audio interface, (Steinberg models are good value) as they come with good software controllers.
Get something like Cubase Elements (Which is quite cheap and will suit a lot of users) to get you going, than as you learn more you can decide how you wish to expand. (Cubase Elements can also be upgraded for reasonable price)
If you’re doing a lot of audio, then Steinberg’s Wavlab elements is a good place to start, and you an usually get both Cubase and Wavlab as a package even cheaper.
If you are going to use your DAW in a live environment, then Ableton Live is a good DAW to go for.
There are also free DAWs out there if you just want to try to see what it’s all about.
If you have a MAC then you are pretty much limited to Steinberg and Logic DAWs (Ableton Live should also now work with the latest MAC OS, but check first)
Have fun
Bill