I’d say it really depends on what kind of look you’re going for and just how complex you want your poses to be. 
I’m lucky in that I don’t have to freehand draw any poses anymore because I’m able to render whatever poses I want using 3D software and either use it as a reference or a base. I recommend this method to you along with Daz Studio if you’re confident or conscientious about moving 3D models and would rather something more complex than editing custom poses. It’s also good for rendering backgrounds and overlays if you’re open to doing that.
Digital art (without editing) takes me many, many, many hours so I don’t really recommend that unless you want to go for a highly realistic look or totally non-episode look and don’t need to have a cover within a short period of time.
For simplicity and speed, it’s better to go with editing where it’s mainly screenshotting, removing backgrounds and cutting/pasting/rotating/scaling different screenshots to create something new with the possible addition of a bit of artistic editing.
What I mean by 3D base + editing (which is what I normally do if the poses are too complex for screenshotted animations)
Screenshots only + editing (which is what I recommend you do because you’re new and it’s the easiest method)
For basically anything and everything else art based (digital art, editing), as most have recommend previously — Procreate on an iPad with Apple Pencil is really good. 