Web Hosting is the Next Step

With your domain name registered, the next step is to set up a web hosting account, to 'rent' space on a computer (known as a 'server') from where your website can be presented to the world via the internet.
There are literally hundreds of companies in the web hosting market, each of them vying for your business. However, you have to be extremely cautious when selecting a web hosting company because it does not necessarily follow that the company or organization that immediately appears to be the best will in fact be the company who provide the highest level of service.
For instance, because the web hosting market is an extremely competitive place, many web hosts use rock bottom prices as their main point of attraction. The problem with this is that the majority of web hosts who charge what quite honestly represent uneconomic prices do so by cutting or skimping on the services that they provide.
This is a critically important point to grasp because you are always reliant on your web host to keep your website live and on the net. You want your site to be visible 24 hours a day, 7 days a week, 365 days a year, and anything that potentially threatens that visibility is a threat to your business as well.
Unfortunately however, no matter which web hosting company you choose a, there is always a possibility that your site will occasionally have problems, times when for example it might 'crash' meaning that no visitor is able to see your site or learn about what you have to offer.
In this case, you must been 100% confident that your web host has 24 hour service so that they can repair your site no matter what time of the day or night it is.
The chances are that if you go for a web host who is charging rock bottom prices, they will not provide 24 hour service, working only normal working hours instead. In this case, your site and therefore your business could be offline for a period of 12 hours, during which time you could lose an awful lot of sales and money.
In short, choosing a web host because they are the cheapest is normally a completely false economy, a move that will save you a couple of dollars every month but might ultimately cost you several hundreds of dollars over the course of the year.
Most reputable web hosts guarantee a certain percentage 'uptime', meaning that they guarantee that your site will always be alive for a guaranteed minimum percentage of every hour, every month. Consequently, you should check with any web host you are considering using what their uptime guarantee is, because it is crucially that your site is up at all times.
You also need to consider the amount of disk space that the web host you are considering using offers. Check on the bandwidth that would be associated with your account should you choose this particular host too.
Whilst the majority of webmasters never come anywhere near using their full allocation of disk space (which basically equates to the number of megabytes of information that make up your site), bandwidth represents the amount of traffic or number of people who can see your site every month.
Hence, you need to make sure that the web host you're considering offers sufficient bandwidth to enable everyone who tries to visit your website to do so successfully.
Another important consideration is that some web hosts are far more internet business friendly than others. This is important because if your host understands the demands and requirements of online business, they are far more likely to be flexible than would be a hosting company who are not particularly au fait with the world of online commerce.
For all these reasons, the web hosting company that I would recommend to get you started is Hostgator.com which is a hosting company that is used and recommended by many thousands of experienced online marketers.
They are a hosting organization that is well versed in the demands and requirements of the online marketing community, they offer a 99.9% uptime guarantee and they use the excellent cPanel through which you control your site:

As you can see from the screenshot, Hostgator even offers a free site building program resource. Although this particular site builder is not primarily focused on building the kind of website that you need for online marketing purposes, it is nevertheless a reasonable fallback option that you can use to construct a site extremely quickly should the need arise.
There are undoubtedly cheaper web hosts in the market than Hostgator but at $7.95 a month for their more-than-adequate 'Baby' hosting plan, this represents a deal that is pretty unbeatable when everything that is offered is taken into account:

You will for example note that the bandwidth and disk space is unlimited as is the number of domains that you can host under the same account.
In effect, you could construct as many websites as you want attached to as many domain names as you can afford and host every one of them on the same account. Were you to do so, the fact that there is unlimited disk space and bandwidth available means that you really only need this one hosting account at least for the foreseeable future.