Getting back to Singapore by bus. You can return to Singapore by taking either bus No.170 or the Singapore-Johore Express Bus from Larkin Bus Terminal. What's at Larkin Bus Terminal. The Larkin Bus Terminal is a large bus interchange where there are many regular express bus services to all parts of West Malaysia. So you can take a bus to other parts of Johore, or to Malacca, Kuala Lumpur, even up north to Trengganu and Kelantan.
Fares are inexpensive and the service mostly quite efficient.
Also at Larkin you can find small traders selling clothes, cloth, music cd's, local and fast food, traditional medicine, etc. Prices here are very reasonable. What's at Johor Baru town. The best way to discover Johor Baru, is to walk around town. Well, if you're a traveler to Malaysia, then you have to indulge yourself in the local food.