Pedro,
Lesson 1. The DAW is basically just a digital multi-track tape recorder.
Lesson 2. The DAW software needs a decent audio and MIDI interface.
Lesson 3. MIDI is a digital "piano roll" that drives a particular "module" (i.e. VSTi) to achieve a particular sound.
Lesson 4. If you have specific problems, post them specifically in the appropriate specific product forum.
Lesson 5. Use the terms of the DAW, not terms you think should apply to the technique you wish to accomplish.
Lesson 6. Watch a chitload of YouTube videos for your specific DAW.
Lesson 6a. I'd say RTFM but you've already done that.
Aside from that, I'm a bit too busy and scattered right now to give you any more lessons.
HTH