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The second point talks about how we can ensure milestones in our progress are recorded properly. Because your development may take place over days, weeks, or months, it is important that you save a copy of the site at various milestones during development. These milestones can be anything you want. For example, once all your products have been added to the site you could save a copy and put it into a different folder. In this way, copies of the site are kept after each major step, for use at a later stage if necessary.
After each milestone is saved, development is carried out on a copy of the latest milestone so that you always end up working on new parts of the site, and progress is easily tracked and monitored. Each milestone should also contain a text file outlining what has occurred during that phase of development, as well as listing the entire functionality of the site till date. This may sound like overkill now, but it will make life easier if you are always aware of what has been done and when it was done.