New to SEO - Need some basic guidance | General - All in One SEO Pack Pro Forum | Support | Semper Plugins

I am at the stage in my web development where I need to insert the Page Titles, Page Descriptions and Keywords. I have been redesigning a new site refactoring over the content from the old site pages that have the descriptions and keywords in the html and i am sourcing descriptive words from that to put into the new All in one SEO fields. Can someone direct me to best practices that I need to keep in mind when inputting those fields? Some of my page names are longer than 60 characters, will that be a problem???

The Site url is:

dev.mcgrathinc.com