A basic condenser enlarger. An enlarging lens. Choose an inexpensive paper at first because you will probably go through a lot of it. Three 8x10 plastic developing trays. Make sure the safelight is approved for the type of paper you will be using.
Many individuals are allergic to darkroom chemicals.
To measure processing times. A watch works just fine. A light tight room, such as a dark closet or windowless bathroom. Mix the chemicals according to the manufacturer's directions. It is not critical that all three solutions be the same temperature.