Glad you are enjoying your piggy, I am sure he is adorable
Now, If you have a look in the purple bar at the top of the forum, just under the logo with the two guinea pigs, amongst all the different things to click on there is one called "search". If you type in things like "cutting claws" LOADS of threads will come up that are to do with the subject. You might be best of looking at the ones that have been posted in the health and illness section of the forum as they are the most likely ones to be relevant (as threads about claws in other parts of the forums are more likely to be about "cute piggy feet" or about what sort of flooring in the outdoor run is better to wear claws down)
You will find that 90 percent of the questions that a new piggy owner might have, have already been answered five times somewhere on this board. So using the forum search is a good way to start
If your search is for some reason not successful, try re-wording it. So, instead of "cutting claws" try "cutting nails".
//EDIT:
I also just realised that there is a "sticky" in the health and illness section of the forum that shows you how to cut claws. A thread that is a sticky means it has been "stuck" to the top, and no matter how many other threads are being posted in that section of the forum, the thread will always stay at the top and is easy to find.