3-on-the-tree?

There is a 69 Dart 4 door slant six with 3 on the tree for sale locally that I'm kinda looking into. I just have never had a 3 on the tree before. ( I've barely even driven stick shift cars ). What can you tell me about them? If I go check this car out, is there anything I should look for specifically? ( in terms of the trans/shifting, I know about the common general mopar stuff ). Is a 3 on the tree reliable? Would it be fairly easy to drive?

Thanks for any input guys...
My Dad has a 1965 Faclon with the 170 and the 3 on the tree, I learned how to drive a stick on this car at the ripe age of 14. 3 Years later, I'll tell you this: believe me, it's no harder than driving a floor shift. Do check for slack in the shifter though, I notice as I move Dad's car around the shop (major body is taking place) that it is very very sloppy these days.