There could be many, many reasons but start with checking the oil level, it may be low.
If the clicking is happening only when you are moving, it may mean that you need new wheel bearings.
Check the oil first, if oil is low it will run good but just have a constant clicking sound on idle.
fan belt or lots of things but most likely fan belt
The converter is clogged or the engine is running way to rich or has a misfire.
Most likely a bad connection with your contact points.
Sounds like the a/c compressor is locking up and burning both the a/c clutch and the belt..........
This sounds like the power brake vacuum booster going bad.
it's probably the head gaskets.
you need to get your feet chopped off
Depends on what's wrong with the starter, exactly. It could be whirring sound, a clicking sound, no sound at all, etc.
It sounds to me you are using a fuel to low in octane, either that or your timing is wrong. Try running on 95 or higher octane fuel.
Depends on what else is going on. Check the basics.... Fuel, Air, Spark. There is probably about 30 or so things that could be wrong. More info, then maybe we can help better.
Possible battery, starter or connection problem.