There is no general answer to this. It is just about finding what your business/freelancing model dependslacks at present, and it depends on the Freelancingfreelancing service you provide.
If you are doing something that wouldcould go viral, then you need to invest in Twitter/FBFacebook/Google Adwords because something. Something that can go viral should catch the eyeeyes of as muchmany people as possible, and in this way you would have a strong network as well.
If you are freelancing locally or something(teaching, like teachingtutoring, etc.), you can get cheap pamphlets doneprint and distribute themcheap pamphlets.
Depending Depending on the Freelancing thing you doyour field, you can invest from advertisement to simply printing business cards.
It is just about finding what your business/freelancing model lacks at present. There is no general answerin a variety of services and products, from advertisements to thissimply printing business cards.
