There are also meditation classes given all over the place. Try a web search for "meditation" and your geographical location, and you're bound to find something. You can also look at physical bulletin boards in libraries and coffee shops. Those often have fliers for some meditation centers or courses. You can also look for meditation-related meetups on meetup.com or on craigslist. Finally, you can try asking around at your local religious establishment. Though it's mostly associated in popular consciousness to the Eastern religions, meditation has played important roles in all the major religions.

One thing to keep in mind is that there are lots and lots of different approaches to meditation. An approach that has been mostly de-religionized called "mindfulness meditation" has been very popular in the West in recent years, but there are many, many other methods too. Unfortunately, I know of no one comprehensive guide to all the different types. The information tends to be scattered all over the place.