I am a mechanic for a living. If I was talking to a fellow mechanic that hasn't. done it. If say its easy as hell but that person would already have knowledge of how the brakes work. But since you have no knowledge of brakes I wouldn't recommend doing it yourself. People often tend to not do something right that will just cause more problems in the long run. If you must do it yourself. Use a wire brush to clean the caliper bolts and mounting bracket bolts. Use blue lock tight when putting back together. Make sure to re grease everything. Also don't re use the old axle nut. You need a c clamp to compress the piston on the caliper, and if its the screw type you will need a screw type piston compressor. Good luck. Oh also you can go about 50 and hit the brakes hard if your steering wheel vibrates side to side while slowing your front rotors are warped.