Guide book

Worth seen:
Warsaw Old Town "Starówka" http://www.warsawguide.com/old-town-in-warsaw/
Royal Bath Park "Łazienki" http://www.lazienki-krolewskie.pl/en
Royal Summer Residency "Wilanów" http://www.wilanow-palac.art.pl/
Old Town Viewing Platform http://www.taraswidokowy.pl/index.php?lang=en
Pallace of Science and Culture Viewing Platform http://www.pkin.pl/en/taras-widokowy/
Neon Museum http://www.neonmuzeum.org/pages/index_uk.html
Copernicus Science Center http://www.kopernik.org.pl/en/ - interactive fun for adults (they say it's for children, pfff!)
Warsaw Uprising Museum http://www.1944.pl/en/
Museum of the history of Polish Jews http://www.polin.pl/en/
Museum of Fryderyk Chopin http://chopin.museum/en/about/us

Free walking tours
http://freewalkingtour.com/warsaw/ (most recommanded "Alternative" (right bank "old Warsaw" Praga), "Communist" and "Jewish"),
http://orangeumbrella.pl/

Useful:

Warsaw ticket and fares: http://www.ztm.waw.pl/index.php?c=110&l=2
Warsaw public transport routes: http://warszawa.jakdojade.pl/?locale=en
Subway: http://www.ztm.waw.pl/?c=80&l=2
Bike rental: https://en.veturilo.waw.pl/

Traditional polish dishes:

Best ever soup - żurek! 
Pierogi (dumplings): ruskie (russian), z mięsem (meat), z kapustą i grzybami (cabbage and mashrooms)); 
Zapiekanka (street food), kotlet schabowy (wiener schnitzel), śledzie (herring), kluski śląskie (Silesian potato dumplings), gołąbki (meat-stuffed cabbage), flaki (tripe).

Polish cuisine:

http://restauracjahektor.pl/sites/kontakt,8 - very good prices!
http://www.restauracjastarydom.pl/restaurant-old-house
http://www.folkgospoda.pl/en/tresci/65,contact.html
http://www.podwale25.pl/menu
http://www.zapiecek.eu/main.html 


(; 5 Reasons Why Polish Vodka Is So Much Better Than Russian ;)


Excellent street food:

http://zapiexy.pl/ - traditional polish steet food!
http://krowarzywa.pl/en/ - excellent vegan burgers, best in the world, trust me!

Delivery:

Best sushi http://www.geishasushi.pl/geisha-sushi-menu.html
Pizza Domino's http://www.dominospizza.pl/en/index/index