Basically it just means you think in pictures and are very intelligent. Instead of trying to read code see it as a series of photos or pictures that you can rearrange to make happen what you want. There is a direct correlation to what you see in code and what happens with the web page itself. Working in code just gives you the fine tuning ability you can’t do through other methods.
You create the folder structure outside of pinegrow using if you are a Windows users then Windows Explorer to create the directory structure for the site. If you are a Mac user than whatever equivalent to directly create folders and directories in the file system.
Then in pinegrow use the load Project option and navigate to the parent folder of your new site and then you can interact with the folders from within Pinegrow.
You put the title and other meta information in the page itself using the code editor which you get to by clicking on the </> on the top of the page to the right of where the name of the file, size of the page and Page options are at. If you go all the way to the right there is the closing X which would close the page.
The only limitations you have with length is what the internet and Search Engines allow, there are no length limitations when working with code directly.
Will be great if you would share your expertise with tips in the forum on how to create good SEO, will look forward to your sharing.