I also play Limit Hold'em at my local casino and most of the time when playing ring games online. My tournaments, both online and at my casino are No Limit, of course.
Yes, there is money to be made playing Limit, particularly low stakes Limit. The reason is that your poker profit comes from your opponents making more mistakes than you do. And, basic poker mistakes are rampant at low stakes Limit tables. Most players play too many hands and go too far with them...that makes them ripe for picking. But, be forewarned, you must learn to deal with bad beats! Low stakes Limit is often called "No Fold'em Hold'em!" for a reason...very few people fold. It's not unusual for 6-9 people to see the flop and 3 go all the way to the River. Once someone calls pre-flop, if they get any piece of the flop they are usually getting the right pot-odds to continue calling...even calling a Turn bet to hit their gut-shot. That means that bluffing
seldom works and you usually need to show a good hand to take down the pot. So, no matter how mathematically correct you play, bad beats will happen...a lot on some days! And, you will continually ask yourself, "How could anyone call pre-flop with THAT hand!"
After playing primarily Limit for a year, I have learned that the best way to ATTEMPT (it's not always successful!) to minimize the "donkey" effect is with well timed raises and reraises. If the game at your local casino has the feel of a home game, with everyone there to have a good time, your raises and reraises may not be too welcomed. But, if you want to have a shot at showing a profit, you need to move the donkeys aside. That's why I usually prefer to play against loose, passive opponents, of which there are a lot at low stakes Limit. They make the most mistakes and seldom raise pre-flop, but will often call a pre-flop raise, and seldom reraise post-flop.
Anyone playing serious low stakes Limit should read "Small Stakes Hold 'em: Winning Big with Expert Play
" by Ed Miller, David Sklansky, and Mason Malmuth. It's the best book I have ever read on Limit. By the way, just because you know how to play No Limit, don't think that everything applies to Limit. Limit and No Limit are completely different animals, just as tournament No Limit and cash game No Limit are completely different.