Greetings in Telugu

First we start with greetings in telugu.
Hello How are you?= Hello baagunnaraa?
What are you doing?= emi chesthunnaru?(Respectful)/ Emi chesthunnavu?(No respectful)
Thank you= Danyavaadamulu (this is very formal in telugu better you'd say thank  you)
Good moring ! = Shubhodayam !
Good afternoon != Shubha madhyahnam!(Usually people wont say this telugu  ..it doesnt look good if you say  this on a hot summer afternoon so better you'd say good afternoon)
good Evening !!= Shuba saayantram ! !(same as above )
Good = shubha/manchi  (opp: Good X bad(chedda))
Bye Bye = veedkolu
Good Night ! = Shubha ratri (better say good night)
Take care= jaagratta (Ex: take care of your health = aarogyam jaagratta)
Welcome = suswagatham 
Most of the above sentences do not have example because in telugu now a days many people are using english words to greet others.It looks strange and sometimes confusing if you speak formal telugu.So better you 'd use english words for greetings .They can easyli understand.

Happy learning...