Installing an Oxidize template/component via the shortcode method is easy.
First, head to your Oxidize Downloads page, and download the file associated with your purchase. You are also emailed a direct link to this download.
On your Oxygen Builder website, make a new reusable part/template/page (type depends on the product you've purchased), name it, and publish it.
Copy the shortcodes from your TXT file.
On your Oxygen Builder section of the backend editor, click "+ Shortcodes" to expand the associated text field.
Paste the shortcodes, copied from the TXT file, into that text field.
Save the reusable part/template/page again. It's now ready to be used.
You may need to resign shortcodes depending on the product. This is a good security practice anyway.