As you have seen there is a VOR but no approach procedures, strange but true! The positive note is that this time of the year it almost always possible to land without huge problems, but in case you get a bad day think about FLHN airport as alternate
You dont need other charts for the airport, once you have landed you will exit via A or B and park to the main apron; if you fly something smaller than a Caravan go park on the first row, if you need to stay for more days ask the tower where is best to park, maybe they will send you to the W apron, huge plenty of space and away from all the daily traffic.
Don't know about handlers, but if you need custom/immigration is very easy and straigfhforward.
If you need to refuel: Avgas you must taxi to the pump, JetA1 they will came with the bowser to your plane
Enjoy Kasane and if you have more questions, shoot!