Identify which arrondissement (district) best fits your interests, lifestyle, budget and transportation requirements. Paris is divided into 20 districts, each with its own distinct personality and culture. The Marais, St. Germaine-des-Pres, Montparnasse and the Left Bank's Latin Quarter are particularly popular with artists and students seeking eclectic, bohemian, free-spirited and economical experiences.
Research the availability of apartment rentals in your chosen neighborhood. Fully furnished studios and lofts catering to student budgets are plentiful throughout Paris and include linens, cookware, tableware and laundry room access. These studios average about 200 square feet, including kitchen and bath. As of August 2012, the cost ranged from 600 euros ($737) per month to 1,600 euros ($1,966), with many landlords requiring a three-month commitment. If you'd like more space, consider advertising for a roommate, ideally one whose work schedule is the opposite of yours.
Take advantage of the Paris Metro system, with its 300 train stations within proximity of one another throughout the city. Another option is the 24/7 bike-sharing program, in which you could rent a zippy "Velib" for less than 2 euros (about $2.50) a day and less than 10 euros (about $12.25) for a week, as of August 2012. Paris is also a wonderfully compact city for pulling on your walking shoes or your rollerblades and getting some free exercise -- and transportation.
Familiarize yourself with the schedule for the city's weekly flea markets. Purchase fresh produce at farmers' markets to save money over grocery store prices. Stock up on staples in the grocery section of Le Bon Marche on the Left Bank and do your own cooking at home. Enjoy affordable meals at sidewalk cafes. Fast-food establishments have also found their way into the Paris landscape, along with a multiplicity of ethnic eateries that offer wallet-friendly meals.
Indulge in free events such as festivals, concerts and art shows. Take a picnic lunch to the park and soak up the free scenery. Hang out in cafes that provide free WiFi. Visit the national museums for free the first Sunday of every month. Order free tap water at cafes and restaurants instead of bottled water or soda. Do potluck meals with your friends. Instead of buying books, get a library card. Take free, self-guided walking tours of the city. Enjoy half-price beers, drink specials and cheap appetizers during happy hour at bars and restaurants.