01 xplorer 4×4 with hot start and electrical issues

I Just picked up a 2001 Xplorer 4×4 this evening. I drove a ways to pick it up and only verified that it ran before i can home with it, shame on me.
The first thing i noticed when i got home with it, was that there was no battery in the tray. Also none of the lights work (headlight, taillight, indicator lights, etc) even when started from pull starter. Also seems the 4×4 doesn’t work.
Second off it won’t pull start at all after the engine is warmed up. It will start first pull if it is cold though.

I think i may have bit off more than i can chew, i can’t even figure out what battery i need to buy for it. If anyone can point me in the right direction as to where i should start, it would be much appreciated.

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