I can agree with most of those useful tips allenhall15, with the exception of "3".
I was playing the Wolf Run slot a couple years in a Las Vegas casino and played its maximum lines, 40.
I got some good hits on the machine but ended up losing about $10 or so on it, then moved on to another machine.
A friend of mine went to the same Wolf Run slot machine I had played not 15 minutes earlier, dropped in $20 and lowered the 40-lines to 30-lines.
He spent a couple minutes on this slot machine and hit a $600 payout!
That was playing just 3/4 of of the avaiable lines, or 30 lines out of the maximum of 40 lines. He ended up cashing out over $800 from the machine that day.
I tried playing 30 lines the next day on a Wolf Run game and it gave better payouts for me.
And needless to say, I cashed out while I was ahead.