I need help working on my 1993 ford ranger can anyone help me!?

So I started my truck up and moved it into the driveway, parked and shut the car off then immediately realized that i needed to move to let someone out of the garage, so i jumped back in to move and my car just totally wouldn't start. The lights and radio come on in my car and when i go to start it it just goes "CLICK". Due to my extreme frustration I put a new batter into it just a few days later. I'm pretty sure it isn't the alternator, My battery cables are pretty badly corroded and when i tried to hook up the new battery last night and got the same results i called it quits. I went out this morning to take yet ANOTHER look at it and it was already bubbling with battery acid or whatever it is. Could it be that my batter cables are just screwed and i need to replace them!? Maybe they're blocking the connection!? Help me please.