Click the "Purchase TSG" link on one of our affiliate’s websites, or visit the TSG website’s affiliates page and click the "Purchase now" button alongside one of our affiliates. Your web browser will be opened on TSG’s online store. You should see a page similar to the one shown below, only the available option will be called TSG Base instead of Viewer.
Next, TSG’s EULA (End User Licence Agreement) will be presented to you.
After that you get another chance to change your mind.
Now create an account on the licence server.
If you are creating a new account then you will be presented with a form to fill in. If you already have an account then you will see a similar form where you can confirm your details. As noted in the EULA, your details will be kept private.
You are almost there. There is no form for payment details as the TSG Base option is free.
You will be presented with an invoice (for $0.00).