Hi I've been using iTunes on my earlier computer but now after downloading itunes in the new laptop the library is empty (music, apps everything) even after signing into my apple account. How do i get all my earlier purchases into my new computer? Thanks
Go into iTunes store then purchased. You can retrieve it from there.
And don't try to sync with your iPhone or iPod until this is sorted, you're likley to wipe the music from the iPhone/iPod if you try.