Future with WILL & GOING TO

WILL
http://www.isabelperez.com/happy/tenses/will.htm

http://www.english-grammar-lessons.com/willfuture/menu.php

WILL OR GOING TO
http://www.better-english.com/grammar/willgo.htm
GOING TO

http://www.ompersonal.com.ar/omexercise/tiemposverbales/unit08.htm
http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/gofut.htm
http://www.english-grammar-lessons.com/goingtofuture/exercise1.swf

We can also express future using The Present Continuous tense:

http://www.english-grammar-lessons.com/presentformsforfuture/menu.php