Select a free beat program. Read reviews of programs before downloading to find the best selection of hip-hop samples and drum kits. Check system requirements prior to downloading to make sure you can run the program.
Listen to any sample beats that come with the program. Watch the graphic user interface while the sample is playing to learn how the program represents various sounds and beats. Read the help document if you are unsure of how to use any of the controls.
Build your beat using the graphic user interface step-by-step. Save your document in a new file after adding each layer of the beat. Return to a previously saved file and try different variations on your beats.