Morning Rowleyhouse
I use www.aaireland.ie/routes for planning jorneys. If you log onto this you'll see a map of Ireland and just above it a black band where you can type in Almeria Airport to San Juan de los Terreros - you must also check the box for Europe on the right hand side of this bar.
You'll get very detailed directions and a map. It's also a very easy drive to an Jan from this airport.
I would also recommend having a look at the route on Google Earth as it gives you a very good picture.
S