agree with Vicky here, it’s hard to provide you with the right information to get you started without a little more information.
Where are you trying to link from and to? Which applications / website? What is the purpose of the links? (To generate traffic, for seo linking, to drive revenue etc)
In terms of branding, what is your company and what do you have today? That will give us enough information to be able to provide the right level of guidance.