You don't just want to go chronologically. Reviewing teams are doing this on top of many other commitments. They flip to the beginning and the end. Make those moments count.
Have a table of contents can also help direct - and don't forget page numbers and bookmarks in the PDF, if it's digital.
This Google Sites page that I'm using to create this could be another great way to make a digital portfolio if you want to have a create your own adventure of the many aspects of your training and career.
Create a quick summary of every project - not a thesis paper because part of the challenge of a portfolio is to succinctly summarize your projects.
You may not include every project you worked on in your portfolio. Only include if it's something that adds value and that you are proud of or can point to lessons learned or improvements you would have pursued if it moved forward.
Collate your "red dots" for the various projects.
Here's a link to one version of my professional portfolio. Below you will see a link to my student portfolio flip through. This is a great format for translating between digital and print.
LA Campbell | Professional Portfolio 2021
Links to a YouTube videos of me flipping through my student portfolio. Made this for a friend when I had small children roaming about, so there is a kid intermission - hence the two videos.
Red Dots - In the profession, firms preserved their best project documents with slide photography. A graphic designer would have binders full of slide sleeves and on the best ones that represented the project, we would put a red dot sticker. I'm not sure if that was a professional standard or just Laurie Olin's way he started the business. Ultimately the name just stuck. Short summary: your best images of each project - be it your renderings, diagrams, excel spreadsheet snapshots if you are featuring financial data support, concept and hand sketches, concept or final models, etc. You may not use all of them, but it's important to have them at a quality that works for your portfolio medium.