I have a 1998 Ford explorer ut

PLEASE SOME ONE HELP ME ... it sounds like a lot
of money to get things fixed and I are u can also
save so my problem is I got a car from a Craigslist  
and my car started up it drove home I had to fix the
alternator I did I drove the next day twice now my
truck won't start all the lights come on but it won't
make a sound four people have looked at it one
said the starter one said the key the theft light is
not blinking fast and and the fuel button in pushed
down do this sound like anything anyone knows
about??????