Let start from the beginning... You have decided you want to build your own online store. Now what?
We need to get a plugin to get it going.. For the purpose of this example to illustrate how easy it can be to do, I will be using WooCommerce. Currently I do have this plugin running on two of my sites.
Step 1: log in to your Wordpress site and go to your dashboard
Step 2: on the left side, click on Plugin - then add new. You will see a search screen appear to the right. Where it says keyword, type in e-commerce and hit 'enter' to do the search.
Step 3: Choose your plugin. As mentioned earlier, I will be doing this example based on the WooCommerce plugin. A nice feature about this plugin, at the bottom of the tile, it will tell you if the plug in is compatible with your Wordpress theme, this will give you the confidence that it's going to work for you.
Step 4: Click on install now, wait for it to load, and then click Activate.