Please take in your mind
Joomla is a complex content management system and not a web page builder. You need to understand the Joomla functions and it is recommend to have some PHP/HTML/CSS know-how to customize the themes.
Individually Template documentation
Each Joomla template comes with a detailed documentation. The link for the detailed documentation can be found on our website, see image below. Select your template > Scroll down > Documentation
Some of your questions are always answered. Please visit our forum and use the search function.
We have a lot of detailed video instructions, please visit our YouTube channel too: http://youtube.com/Joomlaplates
We are committed to help you with any type of support query, however we can't provide extensive help in terms of customizations. In general customizations may look simple but you will require solid knowledge of web technologies and programming skills to do them or hire a professional who can do it for you.