If you are going to use Authorize.net as your payment gateway provider, then we will need a few things from you in order to get your website set up with taking payments online. This article will explain that.
First of all, if you do not have a payment gateway provider and want to use Authorize.net, then here's how to get an account. You can typically get an account with Authorize.net from your bank or your merchant account (Visa / Mastercard) provider. If they don't offer it, then you can get it from an Authorize.net reseller or now, directly from Authorize.net.
Sign up for Authorize.net Here
Remember that any account set up with Authorize.net is in your company's name. Webstix does not do this for you. You need it in your name so that the funds go to your account and so that you pay their fees.
Once you get your Authorize.net account, you should login and go through the brief questions that they ask there in order to fully set up your account.
Here is an article that will guide you to set up the API Login ID and Transaction Key:
https://support.authorize.net/s/article/How-do-I-obtain-my-API-Login-ID-and-Transaction-Key
Once things have been set up, you can later change your password if you wish.
We need this so that we can configure the online payment setup on your website and change it from test mode to live mode.
Please let us know if you have any questions.