How do I start?

Ok so it's been about 2-3 years since I have started listening albums whole heartedly, and I really enjoy the process of music production it's always been so fascinating to me and I have always wanted to try all of these things as a hobby , now searching on Google I found out that you need DAW and a Laptop/Pc a decent headphone and you can start producing music , but I also saw someone said to have a MIDI keyboard controller, now I am not gonna buy any MIDI keyboard now, cause I am just testing waters, but I do have a Casio so is there anything I can learn on Casio before moving to a MIDI keyboard? And with regards to DAW I am actually building a PC cause of my college work as well so I won't starting on DAW anytime soon (a month or so) basically, the gist of it is that I just have a Casio for now and can I like start learning anything that helps me in music production ? Also some advice regarding DAW would be helpful