The Liquid Room
Is one of edinburgh's most established nightclubs, and is situated on victoria street. it plays host to both regular gigs and popular club nights. "evol", which takes place on a friday night, is a well respected indie night. for a cheaper, more student orientated indie night, try their wednesday night club "indigo".
Grassmarket
There are many famous "traditional" pubs on the Grassmarket. Beware, however: these pubs are tourist traps and tend to be very popular with visiting stag and hen parties. Real Edinburghers tend to keep clear most of the time, other than to visit Dragonfly, a trendy and well-hidden cocktail lounge just up the street on West Port, which is arguably the city's best bar. This does mean, of course, that it can often get very crowded.
Cowgate
General debauchery can be found on the Cowgate which runs under the South and George IV bridges. Numerous clubs and bars line this street, which gets very, very crowded at weekends. Rush, which is situated on Robertson's Close just off the Western end of the Cowgate, has cheap drinks deals all the time, and is a favourite with students at the nearby halls of residence. Faith is a standard nightclub, with reasonably priced drinks, but sadly, not many other redeeming qualities. Siglo is just across from Faith, and is a similar establishment.
Opium
Opium is one of the staples of the Cowgate and a haven for those of a more alternative persuasion. The music is rock, with a jukebox downstairs and a DJ upstairs. It runs a popular rock karaoke night on Mondays. Opium has very cheap drinks details and gets very busy on the weekends.
The Jazz Bar
Edinburgh's famous, quadruple award-winning live music venue has a lovely warm internal ambience and wide-ranging audience demographic. Featuring a lot more than 'jazz', there's multiple back-to-back gigs a day, seven nights a week, with acoustic, jazz, funk/soul and other good music, to 3am every night. A popular weekly feature is their Monday night 17-piece Big Band.
The Tron
Yellow Card at The Tron on Hunter Square will cost you only £2 if you are a student but gives you discount on almost every drink in the pub. The same card can be use with many other pubs around the country with a Yellow Card sign the other "Yellow Card" pub in Edinburgh is The Crags, situated opposite the Commonwealth Pool on Dalkeith Road.