First thing I see, besides a ton of old tutorial reminders (put the game on a new computer), is a message to visit a jewel socketing instructor. I did that. Had no idea if I got anything good (I didn't).
So I did a quick google search and saw that Sword Roll had a nice tutorial walkthrough that also explained how to get better jewels, how to make them, and how to get the Socket Wrenches which are used to unlock sockets with the padlocks.
Here's the link to explore later (along with it looks like helpful links for other newer features).