1. The document proposes a digital marketing campaign for a client including a homepage takeover, running banners, and streaming commercials on 5 stations for $3,000 in April. 2. It explains various social media platforms and tactics like Facebook pages, hashtags on Twitter, and mentions that can help drive engagement and followers. 3. Foursquare is described as a location-based social network where users check-in to locations and events to earn points and badges, which can help drive in-store sales when linked to promotions.