hi chong i can give you a few ideas ! research means many different things try a few of these.
1 go and have a chat to the old folks in your area,these folks are treasures themselves and know alot.
2 check the local graveyard and read the head stones for dates and names and then go to the public records and trace them to where they lived.
3 look for old buildings, homestead,factories and places where people gathered.
4 check the local waterways and places where there is a fall in the land.rain can often expose dumps
5 surfacing, this when an animal or someone has been digging and you see bits of glass and cermics laying on the surface
6 try and think like the people did in the old days e.g got an old house and they had to dump their trash and people would put it not far from house.
7 the local historical club.
8 learn to look at the ground and often if something does look right e.g heeps of dirt or a shallow depression in the ground have a bit of a dig.
9 go for a drive and check a few spots out and then plan which of these spots mit be a goer
10 roadworks, pipe laying, construction. machinery often expose relics.
11 on the day the weather stop you from going buy a book on the subject[hundreds of them]
12 if you get on to a good dump get a good share for yourself before you say anything
13 even in good dumps theres lots of trash.so take care and take your time
14 good luck and hope you find one soon
tinpan