Unfortunately, as many people have learned, the IBM web site can be an overwhelming experience for an individual user that simply wants to download and try or buy Lotus Notes. Here's some information which you may find helpful:
How to experience Lotus Notes for free:
You can evaluate Lotus Notes for free, with the Lotus Notes 90-day Test Drive.
Lotus Notes Product Manager, Dwight Morse, recently posted a detailed tutorial that explains how to use Lotus Notes to retrieve your personal email (e.g. from a hosted account.) Dwight provides detailed screen shots for each step. If you are a first-time user of Lotus Notes and you want to use Notes as your personal information management system, I think you will find this tutorial helpful.
When you are ready to purchase Lotus Notes:
1. Go to the Lotus Notes Product Page & click the green "View US prices & buy" button
2. Select "IBM Lotus Notes with Collaboration Authorized User License"
I hope this information is helpful.