Farming isn’t possible yet, but no harm in preparing.
Farming SAFE coins will be easier than mining bitcoin.
All you really need is harddisk space.
I’ve already put together a rig.
I recommend a rasberry Pi3 with attached HDD. Download
and install the safe software and play around. Eventually
when farming is possible, you will already have a farming device ready to
go. You would just update the software and go.
Rasberry pi3 if you are not familiar is just a very cheap computer running linux, just plug a keyboard and mouse in to it, and connect it to a monitor and internet connection.