Have a look below and you will find a link for the iPad Manuals, you will also be able to find your other manuals through this link.
Download iBooks first then press the link below, select the manual you want and when it loads tap it in the right hand top corner and you will find a tab to open in IBooks, press this and it will save to there.
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.