For such an organic creature type it might be better to outline it via modelling and sculpt it into the actual creature. Modelling is much better for symmetrical designs with a little bit of sculpting for refinement.
However this creature is very organic and asymmetrical. You can actually just sculpt it from scratch if you want to.
Of course this ignores the entire question of what you specialize in/feel more comfortable with doing. If you like modelling better then do that. It doesn’t matter what you use just what you feel more comfortable doing.
I do want to note that with sculpting it’s recommended that you use a drawing tablet but it isn’t required.
Iv’e never actually been into modelling. Additionallt, sculpting feels really difficult for me, especially forming a decent looking shape, like a head.
Do you have any specific tips/techniques for modelling or sculpting, or perhaps a video?
Finding videos on YT shouldn’t be to hard. Just search for “blender modelling tutorial” or “character creation tutorial” I recommend following a few tutorials so you can get the hang of blender. Then if you feel you’re ready you can start creating your character.
Sculpt it. Just don’t overthink it, if it’s organic then sculpt, otherwise hard surface. If you have trouble with sculpting just make a base for the sculpt using hard surface and then sculpt the details on top once you get the basic form done.
I actually say a video on this. Something about sculpting a dinosaur of some sort by using a base from hard surface and sculpting on top. I think that’s the best way of getting started.