Got an e-mail today, so there is someone out there!

Received an e-mail today saying my long outstanding order will be delivered shortly.

I am new to the Unleashed and cannot seem to find a manual. Mostly it is fairly intuitive and I am getting on well with things. I have managed to do some focus bracketing but am confused by a number of things - 1 - what is step size so I can choose the best option. 2 - what does the direction mean, ...