I have an 1993 Acura intergra. I am an idiot when it comes to cars but I
have deceide to try fix things myself versus going to an mechanic.

My problem is that when I go to start my car it wont always start. This is
especially the problem if the car has been sitting over night. When I
insert the key into the ignition and I get power to the car but when I go
to ignite the car it will not turn over. At which point all power to my
car will shut off. After a few minutes power will return. Upon doing this
several times my car will eventually start. Once the car starts it runs
fine and if I turn the car off for a few hours usually there is not a
problem in turning it backon. I have also noticed in the last couple of
months that when I am idiling the lights are not as bright as when I am
running the car. Is it a bad alternator.

If it is an alternator is something that a beginner could replace?