Now, for painting techniques. Again, everyone has their own personal preferences, and that’s part of what makes this hobby so much fun. I tend to towards fairly dark tones, aiming for what I personally think is realistic, but that style’s not for everyone. Some people prefer much brighter/more vibrant colours, and those can look great as well. The general techniques should be fairly interchangeable though.
Priming. Simply put, it goes before all other painting, and makes paint stick to the miniature. I use black, but if you want a brighter mini you can use white or grey for this layer. Some people do something called zenithal highlighting, where you start with a dark undercoat and then gently spray a white layer from above. I haven’t tried it myself though, so can’t say how well it works.
Layering. This is just using a brush to apply a simple coat of colour. Once your mini is primed, layering on base colours is usually the next step. Although it can mean having to do multiple coats, thinning out the paint slightly with a tiny bit of water can help with showing off the detail, especially given how detailed the Fallout minis are. Several thin layers are generally better than one thick layer. For me personally, I usually choose colours that are quite dark, ready for the next technique.
Glazing. Glazes are essentially the same paint you’d use for layering, but heavily thinned down (enough that a small amount is translucent, but not quite as thin as a wash). To do this properly, use paint medium (essentially paint but without the pigment). I use water because I’m broke, but medium is supposed to be much easier to get nicer results with. Use glazes on areas where you want to transition from one colour to another. On things like the raiders faces and musculature above, I would start by layering a fairly dark version of the skin tone, and then use successive glazes to lighten it on the areas that would be caught by the light.
Washes. When I first discovered these, I thought they were magic. A quick black or brown wash is a great way to add shading and dirt to a miniature without having to go to lots of effort, and they can be further thinned down with a bit of water if the initial effect seems too harsh. I personally don’t wash the whole model and apply them instead just to particular parts, but you can apply washes to the whole model for a quick way of shading it all. You can also use washes to subtly alter the colour of something, such as if you want something to be more blue or more red without completely changing the original colour. If you were wanting to give the impression of moss growing on something, for example, a green wash in the recesses could help with that.
Edge highlighting. I don’t tend to use this technique as much as I used to, but it’s still got its place on some things. A highlight is just applying a lighter version of a colour to areas that would be less in shadow, and an edge highlight is just this but along the hard edges of something. Take your time to get the line smooth, and use mostly on solid objects like armour plates and so on.
Right, I realise this is a lot of information, and I haven’t got pictures to demonstrate any of it. Hopefully it explains the key techniques I use most though, and as always if anyone’s got any questions I’d be happy to answer them 
