This mountain hike is easy hike, there are some steep parts at the top. It offers wonderful view from the top. In winter, there might be a lot of snow so be careful and check for the avalanche risks.
By public transport: The easiest way to get there from Munich is to take a BOB train to Miesbach. Make sure that you are in the correct compartment in BOB train (towards Bayerischzell). From Miesbach take the bus 9552 to Birkenstein. That's the starting point of the hike. The cheapest option is to buy Bayern ticket which also includes the cost in the Bus.
By car: Use the following address in navigation: Google maps link.
Bucheralm: It's a private hut open from beginning of June till mid October. Phone: +49 80282602.
Hubertushuette: Also a private hut, open from 1st May till 1st November.
Kesselalm: Private hut, open from May to November and December to April in good weather. Homepage: link, Phone: +49 80282602.
In winter, gaiters and crampons are highly recommended.
Check for avalanche risks in winter.