User blog comment:SteviWunda/How big is this number?/@comment-31815849-20170425082648/@comment-24920136-20170425194657

Its as good a start as any, just don't be too discouraged if the end result wasn't as big as your intuition would lead you in on, it's part of learning :D

anyway welcome to the googology community and i'll be happy to answer any questions about up-arrows, graham's numbers, and the ackermann function in case you're still not clear on how that stuff works, it can be super confusing at the beginning.