1) Manage your customer database.
2) Email marketing.
3) Develop an e-marketing plan
4) Generate business from your e-marketing plan.
5) Search engine optimisation.
6) Pay per click advertising.
Budut,
There is sooooooo much information out there on Internet Marketing you can hit information overload in about 5 minutes. Do a web search for "How to get started in Internet Marketing". But be ware, these waters are full of sharks, so avoid any site that asks you to pay for anything. ANYTHING!!
You can actually search that on the web.
There are many ways to that and it is up to what you have learned so that you can know what,when and where do you start on your business website.
Try to do internet marketing.