Truck won't start!

[ZMAR]

First off, I finally got a key made by taking the pass tumbler out to get fitted. It turns the ignition flawlessly. I removed the spark plugs and poured in some mystery oil (have been doing this once a week and manually turning the motor). I hooked the positives up first then the negatives. All lights came on and dash works! I went to turn the motor over and it did turn a few times until my jumper cables started smoking ONLY on the posts. I waited awhile and tried again this time starter did nothing just all the smoke off the battery. Wth is going on? Bad ground somewhere? Fried starter?

P.s. no I did not hook them up backwards!
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