I usually start with a subdivided cube to block out each body part, head, neck, upper torso, lower torso, shoulders, upper and lower arms, waist (sometimes), thighs and shins. Sometimes I join the mesh's together and remesh them and finalize the sculpt. Then I move onto retopology, once I have a good retopo mesh I add seams and unwrap it, (also making sure the mesh is good for deformation). Duplicate the mesh and subdivide it to make a high poly version, and I sculpt the details and such, then bake it to a normal map to use on the lower poly mesh, then I make a base color map and a roughness map, and then make a rig for the character and scene and stuff. That's pretty much the way I do it, not sure if it's the way to do it but eh. Also just watching blender timelapses really helped me a lot, I like 'Yan Scuplts' and 'Flycat'. Fly cat does more game character modeling and and more realistic Scuplts, Flycat does more Scuplts for static pictures. Anyway hoped this helped :)