64. Visit the local tourism office
Local tourism offices exist to provide travelers with advice. Be sure to visit them to find out what the current deals, discounts, and free activities are. They have events calendars and are tremendous resources travelers don’t use enough! Also, they'll give you a heads-up on when any of those free local walking tours are going down.
65. Similarly, ask the hostel staff for advice
No, not about your dating life, about deals around town. Even if you're not staying there, pop into the hostels and ask for information. They're usually incredibly friendly folks who enjoy helping people, and they will often give you a lot of advice. They work with budget travelers all day, every day, and they have their thumb on the pulse of the city.
Before you take off on your big trip, make a list of all the museums you want to hit while you're away. Then go online and see if any of them offer free days, and plan accordingly.
67. Tap into Meetup.com groups
Love jazz? Dancing? Archery? Chances are people in the destination you're going to love your favorite hobby too! Use a website like Meetup.com to find locals who share your interest and cheap events to attend. Couchsurfing even offers event boards where you'll find inexpensive/free meet-ups, outings, and concerts to attend with other travelers and locals. And you don't even have to sleep in their living room!