Make a nice hot cup of tea, open a packet of HobNobs and read through the build logs and as much of the rest of the forum as you can cope with. It may sound tedious and there is plenty of chaff among the wheat, but it's not as tedious as building a machine that will prove to be a dissapointment to you.

Kit

PS My wife has a saying, "The best time to plant a tree is ten years ago". The same principle applies to starting to read this forum when you suddenly need to accumulate a brain full of wisdom on all the various factors involved in building a machine.