SILIGURI - The gateway of North - East India is located in West Bengal. Siliguri serve a base for exploring the north east of India.
Siliguri is a shopping destination  because of having an Airport ( In Bagdogra - Half an hour drive from siliguri), railway connectivity and Bus connectivity. As a connecting state to North east , Siliguri became a shopping destination for people. In Siliguri you can find all stores ( shoppers Stop, Pantaloons, Reliance Trends, West Side, Big Bazaar , etc.) . Except it in Siliguri you can explore the malls for food and entertainment.
There are two main malls in Siliguri - COSMOS MAll and CITY CENTER.
Cosmos mall is situated on Sevoke Road in Siliguri. Cosmos mall cater a variety of lifestyle and value stores ( clothes, shoes, cosmetics, electronics, home décor, daily needs), food court, gaming zone, wellness center, saloo and stores like- e zone, big bazaar, pantaloons, adidas, Body shop, W, Woodland and many more brands.
City Center is located at NH 31. City center is a complete place for a family. This place is a perfect blend of shopping, entertainment, gaming. In City Center Mall you can find Shopper stop, Fab India, Reliance Trends and many more brands of apparels. Here you can also find entertainment zone for gaming and movie ( INOX) . This place also provide place for perfect dinning and restaurants. KFC, MIO AMORE, Momos and Street chaat, coffee and tea shops and food court.
In siliguri there is one more mall i.e Orbit Mall..In orbit mall you can find multiplex and some small stores.
There are many local markets in Siliguri around Hill Cart Road like Hong kong market, Bidhan Market and  sethSri Lal Market, In these markets you can explore many local things like handicrafts, clothes , footwears, accessorise, etc. You can pick some Bengali kind of sarees and  white Bangles made of shell from these markets. Hong Kong market is famous for imported items from china, Thailand and Nepal.
All the markets and main shopping complex and cosmos mall is located on Sevoke Road and Hill Cart Road. There are City Bazaar and Reliance Trend Store is also located on the Sevokee Road. Many Jewellary Stores like Tanishq, PCJ and Relaince Jewels is also located on main Sevoke Road. Footwears outlet, Ethinic wear outlet is also located on Sevoke Road. 
From Siliguri you can also pick Darjeeling Tea, there are many stores here offering varieties of tea and coffee . Chai Chun Store is one of the Famous store from where you can pick differetnt types of tea, coffee .
If you take home things made of Crystal then must visit some local market in Bagdogra ( Near Siliguri). There are many local shops in Bagdogra from where you can buy things made of crystals like cutlery, glasses and home décor items.
In short if you want to explore Siliguri then you can go around sevoke road and hill cart road