Both highly ranked by BBB. Both highly ranked by BBB. They list charts on their websites for what you pay and very clear thorough instructions of how to go about sending in your gold. Important thing: they pay for and insure your shipping. You send them the gold. They value it. Let you know. And you have the option to sell it to them, OR to have your gold returned. Usually gets shipped in the same day.
As far as Poker goes (at least for Texas Hold’em), I’d recommend sitting at a low stakes table (1/2 no-limit is the lowest most places have) and merely being observant/make casual conversation at the table for a while until you feel comfortable. If you’ve never played, just tell the dealer and they’ll be happy to help you out (most players will notice if you haven’t played before anyways so you’re not really at a loss there). Just play “tight” (a small range of strong starting hands) and that’s a pretty good place to start!
Note:  There are dozens of other survey sites out there. These just happen to be the more well-known ones that have a reputation for paying out in a timely manner and not having impossible standards for cashing out. As always, be careful with your personal information. I recommend using an entirely separate email address for survey sites so they don’t clutter your inbox.