How to access Sync Settings option in Samsung Galaxy S4(GT-I9500)?

a). Tap on Apps as shown below :

b). Tap on Settings. Now tap on Accounts as shown below :

c). Under Acounts, tap on Cloud as shown below :

d). Tap on Sync Settings as shown below :

e). Now tap on Sync Now :

All your information like contacts, Internet bookmarks & pages and memo will start syncing.