1Z0-007 & 1Z0-147 guidance required !!

[aspiring_oca]

Hi everyone,

I have a little work experience with Oracle. But am a little apprehensive about giving the OCA exams.:confused:

Could anyone who has already cleared these exams guide me regarding -

1. which books to refer for both these exams ?
2. how exactly to prepare for these exams ?
3. does referring to question dumps really help ?

PS - you could mail me the replies at [EMAIL="[e-mail]"][e-mail][/EMAIL]

Thanks !