Various Problems / Warnings

I am getting various warnings when I turn on my Xj6, such as:

Low Brake Pressure
Bulb Failure
Circuit one Failure
Anti-Lock Failure

How do I fix these without taking my car to the mechanic?

Well, for starters, what year XJ-6 do you have?  Next, what symptoms do you have besides the warnings?

I''ve got an ''89, and right now, no symptoms(I am unable to drive it around(need new tires)), except my air goes on and off, and only works on the high setting.