Painting

Been wanting to get into the game for a while but I’m not really big on painting I love playing miniatures games like warhammer but painting never really did it for me so was wondering how difficult it is to paint these minis and if they take well to speed paints? (Me and my friend both play with 90% unpainted models but because you don’t need as many models as 40K was wondering if I could actually end up paint these minis)