I am on my tablet at a restraunt, so it's hard to link, but if you search the terms "Jimbo psychodelic drugs", you end up at some interesting sites.
The frustrating thing here is that "Jimbo" is a very common nickname and user name. There may be a ton of "Jimbos" on the web who do drugs but are not the shooter. It's hard to track the online footprint of someone who has a very common name and uses very common nicknames.