Might I suggest this forum and the sticky threads in the top of it. Especially humidity beads.
http://www.cigarasylum.com/vb/forumdisplay.php?f=14
Humidity is totally relative. There is no set mark to hit. I keep mine around 60-63%. 68% imo, is too high. I know others that keep theirs higher and some that go even lower. It's all about what you prefer.
Oh, welcome! Stop by here and introduce yourself.
http://www.cigarasylum.com/vb/forumdisplay.php?f=7