You do not need a lot of gear to brew a good cup. A scale, a kettle, and a brewer are enough.

The minimum kit

Burr grinder, digital scale, gooseneck kettle, and any one brewer (dripper, French press, or AeroPress).

The repeatable loop

Weigh coffee and water, pick a ratio, brew, taste, change one variable next time. The Brew Log tool keeps the record for you.