My Mazda.... engine fun.

Aiight... So i have an 88 Mazda... bought it from a guy that had it sitting on his yard for the past 5 years or so... he just used it to haul wood around.

I know shit all about engines... but mine isn't running to great... burning oil like a mutha... and keeps stalling... also there is a tiny little battery... not your normal sized car battery in there.

Im guessing the gas is most likely old, and it is very low.

Any tips on what I should do to get this beast running good?