ISMS implementation

Answer: First of all I suggest you ISO 27001, the ISO standard with requirements for implementing an ISMS, which will provide you a structured framework for the implementation. To have an overview of the process of implementing an ISMS according ISO 27001, I suggest you the following material:
- What is ISO 27001 https://advisera.com/27001academy/what-is-iso-27001/
- ISO 27001: An overview of the ISMS implementation process [free webinar on demand] https://advisera.com/27001academy/webinar/iso-27001-overview-isms-implementation-process-free-webinar-demand/
- Seven key problems to avoid in ISO 27001 implementat ion [free webinar on demand] https://advisera.com/27001academy/webinar/seven-key-problems-to-avoid-in-iso-27001-implementation-free-webinar-on-demand/
- ISO 27001 implementation checklist https://advisera.com/27001academy/knowledgebase/iso-27001-implementation-checklist/
- Case study: ISO 27001 implementation in an IT system integrator company https://advisera.com/27001academy/blog/2017/05/08/case-study-iso-27001-implementation-in-an-it-system-integrator-company/
- Free online training ISO 27001 Foundations Course https://advisera.com/training/iso-27001-foundations-course/
- Book Secure & Simple: A Small-Business Guide to Implementing ISO 27001 On Your Own https://advisera.com/books/secure-and-simple-a-small-business-guide-to-implementing-iso-27001-on-your-own/

Specifically about defining the scope, I suggest this material:
- How to define the ISMS scope https://advisera.com/27001academy/knowledgebase/how-to-define-the-isms-scope/
- Problems with defining the scope in ISO 27001 https://advisera.com/27001academy/blog/2010/06/29/problems-with-defining-the-scope-in-iso-27001/

Finally, to support you implementation, I suggest you to take a look at the free demo of our ISO 27001 Documentation Toolkit at this link: https://advisera.com/27001academy/iso-27001-documentation-toolkit/

This toolkit will provide you easy to fill templates and expert support to guide you in your implementation process.