In the Idea Lab, we have tools for fixing and adjusting rim brakes. Rim brakes are brakes that have small pads that press against the rim of your bike to slow it down. We do not have specialized equipment for disc or hydraulic brakes.
There are a few different kinds of rim brakes. Watch the video below to learn about them and identify what kinds of brakes you have. Then, use the caliper mounting and adjustment videos to learn to adjust your brakes. If you need to replace pads or redo your brake cables, levers, and housing, watch those videos as well.
Watch the two videos below to see how to mount and just brake levers and cables for drop bar handlebars. If your bike's handlebars look like the handlebars in the video, you're in the right spot! If they don't, try the other tab for upright bars.