You will get notifications about a new opportunity when it meets your capabilities, or when a prospective customer sends you a quote request directly.
If you're starting from an email, you'll be linked directly to the opportunity page. If you're clicking into an opportunity from the Opportunities view, click the View details button on the opportunity, then click Respond to opportunity.
In order, these are the first sections of your quote.
Next you'll see a section of the quote called Styles. A style is an exact set of specs and other details that a customer has submitted for quoting. To see the full list of specs in addition to quantity breaks and delivery details, click View full details on the style's card.
You can choose to quote the proposed specs, and/or quote alternate specs.