Good to hear from you. You’ll find a whole bunch of iPad enthusiasts in this Forum who are only too willing to help other iPad owners and to hear of their experiences. Don’t be afraid to post any questions you may have or use the ‘Search’ button near the top of the Forum web page. I usually find I discover one new interesting and useful piece of information about my iPad every day - and often not even what I was looking for!!
Hope to hear from you soon with your thoughts about the iPad.
Have fun and enjoy your iPad
If you don’t already have it you can download a copy of the iPad manual for free.
Unfortunately, there is no way to password protect email on the iPad. If your son has a separate email account then the best you can do is to disable your account before handing over the iPad to him. You can do that in the 'Settings' menu of the iPad, under 'Mail, Contacts, Calendar', 'Accounts'