IN Pages on my iMac I can teach the vocabulary to accept unusual words as correct, and not needing to be corrected. For example I can tell Pages to accept " cogitans", a Latin word, as acceptable.
How do I change or add to the spell checking vocabulary on the iPad?
I don't think there is a direct way to do this, but a very clever workaround is to create a list in your contacts app and add words in the notes field. Hope this helps.
The IPad Forum is a community of members from all walks of life and from all over the world coming together to share our experiences and to help each other learn about this wonderful piece of technology the Ipad. There is a wealth of information already here in the many threads we have so doing some searches will answer most of the questions you have. If then you cannot find the answer you are seeking then by all means post your question. There are many friendly and informed members here only too willing to help you.
Yes there are 2 Apps that you can make calls with, Viber and Skype, both very good apps. Of course the people you call will have to have these Apps activated too.