Any BEAM docs?

[Robert Feldt]

Hi,

I'm interested in understanding BEAM, especially the concurrency-related 
parts.

Checking the FAQ the only docs seems to be for an older version on 
Bogdans home page at Ericsson. The link supplied in the FAQ is dead though.

Searching the archives for this list it seems there is no docs for BEAM. 
Reading the source itself seems a bit intimidating (with around 80KLOC).

Is there any overview description of BEAM? Or at least some hints on the 
structure of the BEAM source code?

BEAM is said to be based on WAM. Are there any descriptions of the 
differences?

Thanks in advance,

Robert Feldt
Robert.Feldt@REDACTED