For a start, and to get to know your device a little better, here's a link to the iPad User Guide: http://help.apple.com/ipad/7/
This one is for devices running the latest software.
There are also ebooks available in iBooks Store (an Apple app that has to be downloaded through App Store), or you look for instructions as PDF (these can be found on Apple's support site) and save these to one of the apps on your iPad.
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.