Once you have gave a deeper thought about the goal of your website (read about “First steps planning your web design” by Carlo) you need to think about how the web pages (with text, image, video, input forms, etc. content) will be structured.
Good starting point would be to first try to think of what message [...]

What is the goal of the website?
Of course you have to start from here. Is the goal to get the visitor to click “buy now” or “order now” button on e-commerce website and reach the “Thank you! Payment successful” page or just fill a form and end up “Thank you! Information submitted!” page so you [...]

Detailed planning is most important. Every singe functionality that you want to see in website should be defined beforehand as the cost of developing it is cheapest before development starts and the price increases when development has begun as it was not planned by programmers when they decided how to build database, what frameworks / [...]