Going from one place to another in Macau

We are planning a one-day side trip to Macau from our visit to Hong Kong. We will arrive in Macau through a ferry. My mother would like to see the Ruins of St. Paul. So, I would like an advise on how we can go from one place to another. These are the places my family would like to see: a) Venetian, b) Ruins of St Paul, c) St. Dominic Church, d) Casa Garden, e) Lou Kau Mansion, f) Mandarin's House, g) Lilau square, h) Senado square, and i) Macau Museum.

We have no idea at all which one is near from the other. My family prefers walking or taking a bus.

Your time really means a lot, and we are really thankful for it.