I don't know much about them, but I know a little.
Assumptions: I bet that the commandos possess very talented guerrilla and jungle warfare skills; a majority of the special forces units in Latin America have forces with these skills. I mean if you train in the jungle so much, you will become good at that kind of warfare. On top of that, Venezuela set up their own Jungle Warfare school sometime in 2009. Lastly, I would assume that they use Russian weapons or knockoffs. It just seems likely with their recent arms purchases.
Facts: At one point a while ago (possibly late 20th century), US special forces trained Venezuelan Commandos. Yes, this is true, and eventually the US withdrew because of Hugo's policy. What makes this story more exciting is how in 2006, China began providing substantial military aid to Hugo. Not only did they provide executive security, but they also trained and worked with the Commandos. IMHO I think that the Chinese were trying to obtain as much knowledge about US SF as they could.
Anybody know anything more?