Yeah, when it comes to what to craft with redstone, the Q is really what kind of redstone powered device should I consider building? An Automatic Farm, a Piston Door, Lighting, something with powered rails - come up with an idea of what you want, then have a look on YT for various builds and ideas.
Otherwise, make redstone blocks from 9 redstone ore and use it as decoration.
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I've added a world download of my base, should anyone be interested. Available til 8th Oct 2017. 480mb compressed/705mb uncompressed.