That’s a non-metallic cotton- I’ve skein of it at home- which is better if you’re just starting embroidery. It’s also a boomin’ gorgeous colour if you’re doing it on a high contrast background.
DMC is a pretty solid floss brand, but I would really advise against their true metallic threads until you’re a bit more confident with your basic stitches (back, stem, chain, and satin stitch) and embroidery in general as… well, the metallics are rage inducing in how they tangle and knot up.
I’d also advise, if you’re sewing onto heavy cotton/wool that you make sure you’ve got a sharp needle. There’s nothing worse than having to really tug a needle through fabric. (I’ve also ended up with some pretty gnarly accidental stab wounds when embroidery due to poor needle choice for fabric)
I personally like sashiko (a particular Japanese style of embroidery done on mid weight canvas) needles, as they’re usually a bit longer than traditional embroidery needles, are a bit thicker, are wicked sharp when new, and have a larger eye, which makes threading them so much easier.
(Arguably as sashiko is done with 6, rather than 2-3 strands, of floss)