Hi Terri,
Go to GBs 'Free Games Galore', one of the click tabs above this posting area. Pay attention to the right column an scroll almost all the way down. I forget what section it's listed under but you want the link to the 'Amaniti' site. You'll see all their games including Machinarium. You might be able to play one or two online. I love their games because they're so unique.
Unless you find a WT, there are no directions. You just move your cursur around until it becomes a hand, then click to see what happens. Sometimes it makes sense right away, other times a click does nothing because it is part of a sequence of events that you need to find the beginning to. Let's say, your cursor becomes a hand over a hole in the ground and when you click it a worm pops out, then goes back in. Now you have to figure out why, what other action needs to come first. Look for more actions to click on and soon something else will happen, maybe a chick some out of hiding, etc, then you click on hole in the ground, check sees it, goes to it, get worm into his beak but can't pull the worm out. you continue ilke that trying to fugure out what comes next to solve the puzzle, etc.
have fun!
acebook
witter
Otherwise, it's best avoided as the gameplay is a little repetitious (and grisly).