From someone who lives in Lincoln and works for the Huskers.
The best way to get tickets is through the team's allotment, which will be out in the summer.
The Huskers have sold out every home game since 1962, but tickets are usually available on the resale marketplace of Seat Geek (official resale site) and Ticketmaster.
The visitor section at Nebraska is the lower part of section 19, which is the family/team/visiting band block. The next section is the upper part of sections 20 and 21. The overflow is the upper corner of sections 40 and 41.
Many hotels have a game-day rate, which includes a flat rate (Fri arrival and leave Sunday morning). I would highly recommend booking your hotel sooner rather than later.
Downtown hotels: https://downtownlincoln.org/stay/downtown-lincoln-hotels,
The Graduate Lincoln (serves as a visitors' team hotel if they stay in Lincoln).
The Embassy Suites hotel is one of the pregame hubs on game days.
Things to do:
The Haymarket area has a lot of bars, shops, and restaurants. Making reservations in advance will help a lot.
The Embassy Suites hotel is one of the pregame hubs on game days.
Berry’s - the Nebraska bar - is a Friday night and a game day hangout; they have a huge outdoor TV which will probably have the Husker VB match on Friday night, before, and then show CFB games on Saturdays. The pep band plays there on the patio on Friday nights as well, and the Railyard becomes the main pregame tailgate party on game days.
The main team shop is in the student union, and they will also have pop-up shops around the stadium.
Eats:
Runza Restaurants is a Nebraska staple, and getting the famous runza sandwich, cheeseburgers, and their ranch and onion dips are a must. The original runza sandwich is served at the stadium on game day.
Valentino's Pizza, which is also served at the stadium by the slice, is a must or makes for a great postgame meal afterward.
Haymarket offerings include multiple sushi restaurants, a few sports bars, a lot of international offerings, and Lazlo's Brewery & Grill, which is highly recommended.
I also recommend making a reservation in advance, or you could be waiting up to an hour or so for walk-ins on Friday night and on gamedays.
Gameday Food options at the stadium: https://huskers.com/concessions-menus
Gameday Activities:
Inside the Huskers' practice facility is free live music and activities in the AC.
Memorial Stadium is a no-reentry venue and a card-only venue.
More info: https://huskers.com/football-game-day-information
