Singapore is an interesting country in that it has four official languages, English, Malay, Mandarin Chinese, and Tamil. As a former British colony, many people speak English and there are many expats who live here. It is a very multicultural and diverse country. 

Things to See:

Gardens by the Bay
Orchard Road
Haji Lane
Chinatown
House of Tan Teng Niah
Little India
Sentosa
Geylang (Red Light District)

Hawkre Centres:

Are centers with many foodstalls that allow you to go and order food from many different establishments. Due to the diversity of the country, most Hawker Centres are composed of Chinese, Indian, and Malaysian cuisine and you can go and order many different dishes and try them all. Try Lau Pa Sat and Maxwell Food Centre.

Restaurants:

Odette

Park Bench Deli

Labrynth

Bars:

28 HKS- Bar with fantastic made drinks 

Pump Room- good for going out, good beers

Martini Bar- Grand Hyatt 5-9PM happy hour 14SGD, Cigar Bar on Premises

Corner House

Atlas

Rooftops:

Cé La Vi

SuperTree

Potato Head Folk

Bar Rouge

Marina Bay Sands (This is a must see while in Singapore)

Clubs:

Zouk

Bang Bang

Attica