The Aging description on p. 21 is a bit muddy. Read the full description on p. 17 instead. Yes, for each D6 of age you take, you get +20 percentiles to distribute as you wish (IE: to any skills you want). At 5D6, aging kicks in, and you lose the two characteristic points.
Originally Posted by Drew
See p. 219: "THESE RULES ARE MALLEABLE: This book contains the material that most peo- ple should need to run an epic fantasy cam- paign. Inevitably, your setting will have ar- eas that fall outside of the scope of what we have written. If you don’t want to allow certain races, equipment, spells, etc. in your game that is your prerogative. Discuss with your players the changes you wish to make, and feel free to add, delete, and modify rules to make the game exactly fit your style. Make sure to note anything which alters from the core Magic World rules, so that there will be no confusion as the Chronicle progresses."
Originally Posted by Mankcam
Please note I do not actually work for Chaosium; I just do the occasional freelance editing work for them.