HP Touchpad

I picked one up over the weekend. Anyone know how to download PDF’s on this thing? I can view files easily with an internet connection. I need to know how to store in memory for instances where no open wifi is available. I am planning using this for notes, any help is appreciated thank you. PS I tried using the Box.net app but the files are too big (>100MB) for it to handle. I need to know how to transfer via USB