Online marketing is the way in which you can make your business known to customers in an online environment. If you then achieve sales by showing your business to people online, this is known as a conversion. You should make a comprehensive online marketing plan, to make sure you will get the right customers and can attract them to spend money with you.
One of the main things to do is to have a good quality website. This will show people that you are a professional, reputable business that they can trust with their marketing. You should make sure it has been professionally designed and is simple for people to use.
You can also use social media and tools like pay per click advertising to attract people to your website. You do need to realise that your website is your main marketing tool though, so once people arrive on it, they need to like it.