There are three ways to install WordPress:
The first is manually, by setting up a database, uploading the files and running through the install process step-by-step. You can follow the instructions over here.
2.One Click Install
Your other option is to use a “One-click Install” offered at many of our preferred hosting companies which are recommended by WordPress. These are automated processes that do all the necessary steps for you and email you when your blog is ready for use. They’re quick, easy and almost never fail. Follow these One-Click Tutorials
3.Let Some One else do the Job
The third one ( Which is our best kept secret ) is to hire a free service provider to Install, Configure and Optimize WordPress for you, the mayority of these services only require that you buy your hosting account through their websites, The hosting company is going to give them a commission for referring a client and they will give you an incredible service for FREE. These services will save you days and even months of work load.
Bloggermind.net is our preferred WordPress Setup Provider, in fact they setup our website and gave us a free fanpage and fangating apps to promote our services. Check them out at http://bloggermind.net