Ai on the go!

Hello, 

I am fairly new to Ai.  I am self taught and have made great strides in learning how to do my "one" thing.  I am working on a desktop mac using the pencil tool for my drawings.  I tried the wacom tablet but just couldn't get that to really work for me.  I have been drawing with the mouse!! :-o. 

I would like to take my Ai on the go and not be limited to the desktop.  What should I consider purchasing?  I would like to load photos into a library and have wifi access when I want to search for photos.  I believe the Ai program does not need wifi once loaded on the device.  Is this correct? I  don't know where to startmy search on this.   Can you believe someone could be so dense??  I am older, uninformed and all around techno dummy.  Is it a tablet I need?  An iPad?  Are they the same?  Does Ai work on these units? With a stylus?  What do y'all use to do your work on the go "al fresco"?

Thank you, please be kind.

Mary