1996 Chevy S-10 starting

Engine Mechanical problem
1996 Chevy S-10 4 cyl Two Wheel Drive Manual

i have a 1996 chevy s10. 4 cylinder. 2.2 liter. i went to start it and it wouldnt turn over. i put it in 2nd gear and pushed it down a hill.popped the clutch and it started. it wont start by a jump start any other way.. than it happened again and someone hit the gas tank under my truck with a hammer and told me to start it. and it started. i am a single mom with little income. i am told by just kids it is a starter and cylnoid but than one told me it was my fuel pump.. if i buy the starter it is over 100 dollars and they wont refund it if thats not what it is. any advice would be appreciated..please help...