Yes.. it's good to use as many books as you can. BUT bear in mind that the first book is more focussed on 1.4 exam while the second is for 1.3. And there are differences between the two exam topics. You can check the sun site for more details.
If you are planning to take the 1.4 version of the exam, HF book is more that enough ...
And Hasan, if you are thinking to go for 1.3 version which Study Guide covers, make it quick as Sun is going to drop that certification after December 15th, 2004.
cheers
There are no more "hours", it's centi-days. They say it's better, but this tiny ad says it's stupid:
a bit of art, as a gift, the permaculture playing cards