Start ruling things out, check the fuses first, that's the easiest/cheapest. I suspect you have more than one issue going on, so try to focus on one set of issues first. Not cranking after driving (when the engine is warm) indicates the CPS sensor is bad, but long cold start sounds like the starter may be bad. It's probably not the ignition switch, they tend to cause random electrical issues, more than starting issues. Good luck!
