First thing.....get the Standard.....NCSLI has it at a fair price.
http://www.ncsli.org
Next, get training in uncertainty.....you will need it to get your scope ready.
You will need a lab manual. You can likely write it yourself if you have time. Otherwise get a consultant that is experienced with
ISO/IEC 17025 specifically
Your internal auditor can do the QMS side of your lab internal audits, but not the technical side unless the person is a metrology professional or at least has training in the discipline(s) your lab will be involved in.
Management review is a big thing.....the lab review can be rolled up into the parent review if necessary, but the 17025 Standard, Clause 4.15.1 has a prescriptive agenda and all the topics must be addressed.
Proficiency testing or inter-laboratory comparison (PT/ILC) is a requirement under international recognition. You have to complete one prior to accreditation, then four years to complete your scope, under ILAC/APLAC rules.
Also, when you seek your accrediting body, do NOT sign with any of them till you talk to ALL of them.
This should get you going.....we look forward to the questions that you almost certainly will have.....just as we all did.....so ask, we will help if we can!