I need textbooks–good ones, with exposition and maybe a little consideration of philosophical issues, rather than just lists of propositions and lemmas etc–that will help me regain my bearings on topics like completeness, consistency, Goedel, proof theory, model semantics, and related topics. Online resources would be great but I am not sure ones exist that are useful to me.
Any suggestions?
If I were to ask you if the road on the left leads to the village, would you say “Yes”? 
What level refresher do you want? A beginner’s Logic 101 text, or a more advanced logic text? (For example, if I wanted to refresh my math, I’d skip the 9th grade / freshman algebra and start with first-semester Calculus).
I’ve seen on-line sites with logic lectures. I think Stanford has a series. Try googling for stuff like that.
Whatever other sources you do or don’t use, there’s always Hofstadter’s Godel, Escher, Bach tome. (Or am just stating the overly obvious? :rolleyes: ) The nifty thing about that is you can read it as lightly or in-depth seriously as you want to take it – and it does get into some deeper stuff, for the stoutly logic-minded.
For additional entertainment and enlightenment there’s also “What Is The Name Of This Book?” by Raymond Smullyan – Full Text (PDF) – A compendium of mostly truth-teller/liar puzzles that walk you into increasingly complicated levels of logical reasoning, interspersed with deeper chapters (towards the end) with introductory-level discussion of deeper set theory, leading eventually to a discussion of Godel – also interspersed with chapters of logic-related jokes and silly riddles.
ETA: Yes, I know that isn’t what you asked for, but those are fun and enlightening reads anyway. The real question is: For your review purposes, at what level do you feel you need to start?
The old dice-rolling game Wff’n’Proof was how I got my start in symbolic logic. It lays out the rules, beginning with the simple and obvious ones, and slowly builds up to the complex and non-intuitive ones. I was around 15 when I was given this “game” by my parents, and it didn’t take me very long to master every sample problem in the book.
(As a game, it sucks weasels. But as a teaching tool for learning logic, it’s pretty darn fine!)