For furs I really like this tutorial from Sam with tabletop minions. It’s pretty detailed but you can take what you want from it. Not sure about contrast paints for furs. A dark brown with an ivory/lighter brown dry brush is a pretty easy way to get decent looking fur. You an always wash with ahead earthshade too if the dry brush gets a bit sloppy.
https://m.youtube.com/watch?v=QtYFoY7Z700
For white hair I’d do a light grey under coat and then build up white. You could also probabaly get away with painting the hair white and then using a very thinned down nuln oil wash. Or potentially a light blue wash if you want to get a bit adventurous.
For flesh tones I think the easiest is to go with is one of the standard flesh tones (whichever fits the ethnicity you’re going for) and then a wash, probabaly reiki and fleshshade (easy and usually looks pretty good). If you wan you can the. Go in with a slightly light color and pick out the brow/nose/cheekbone.
Standard metals are easy, I do recomend using Vallejo air metals, I think they’re better than
GW metallics. Note that you can paint them just fine even though it says air. Just paint the metal color on and then wash in nuln oil. If you use a light metallic you will get a “coffee stain” look on the flat surfaces from the wash so you’ll need to go back over it with the orbital color to clean it up a bit.
Let me know if that answered some (or any haha) of your questions!