Any free advice out there?

Hello:

Like many others, I am taking advantage of the time off I have between
jobs to brush up on my certifications.  I'm strongly considering the
RH certs.  I think it would compliment my strong IP and telephony
networking skills.  I do have some SunOS skills, last used years ago.

- Is there a well accepted RH certification available - like Cisco or
Microsoft?

- Any suggested self-study guides?

- Would the people reviewing this group be a source of help when I get
stuck?

Thanks for you time.