Joomla tutorial to help build and customize a website

We want somebody to walk us through building and customizing a joomla website, with a purity-3 template. We have tried and have come up against repeating titles. We would also like to be able to add a back-end shop/store, which we have links to but would like to know how to implement. We would also like to know how to make and modify a slider, as well as move modules, in case we choose to customize them later on. One on one tutorials only.