Books

Both the used book section of amazon.com and eBay's half.com
have many computer books for very low prices.  

There is, for example, the J Rande "MVS Performance Management"
on half.com for $0.75 (plus about $4 shipping).  

I haven't decided to buy it, but it is there.

(There is also one for sale at $30.01, wishfull thinking.)

Now, there is also Carmine Cannatello's "Advanced Assembler 
Language and MVS Interfaces" for $523.83 which I won't be
buying.  (plus $4.00 shipping).  

There is a slight discount for shipping multiple books at
the same time, which helps when buying the $0.75 books.

-- glen