PowerApp Development for an Instruction Manual

I'm looking to build the main structure of a Microsoft PowerApps project that will serve as an interactive instruction manual. The app will need to accommodate text and images, and I will be filling in the content later. The menu and submenus is already set and is available in a spreadsheet.

Key Requirements:
- A skeleton PowerApp that is easy to populate with content
- A user-friendly interface
- Implementation of a searchable content functionality

Ideal Skills:
- Expertise in Microsoft PowerApps
- Prior experience in developing instructional apps
- Strong UI/UX design skills

I need the content to be easily searchable, so a solid understanding of implementing this feature within PowerApps is crucial.