The Metz 36 AF-5 is a barebones flashgun with the added bonus of an AF grid that makes focussing much faster in the dark compared to using the in-built flash.
There is no getting away from how cheap this flash gun is, I paid around £50 new for it. It feels quite cheaply built and is missing features such as manual control or a rotating head. On the other hand it does tilt thereby allowing me to learn about using bounce flash. Additionally it's not too bad on batteries and it is pretty bright. The back consists of an on/off switch, a test button, a charged indicator and a ettl on light.
I would recommend this flash for anyone that is very short of money but wants to explore using a flash. It's a good starter but be warned the inability to rotate will drive you mad at times.