View and CCK are great for doing a lot of cool things on Drupal sites. However, at the same time there are a few things beginners should beware of when using View and CCK.

1) Filter out those 'not published' contents -- this is probably mentioned in every tutorial, book and video... yet once in a while someone will forget to do it. If something is not set to 'published' you should avoid showing it on your live site.

2) Save that view or you will lose it -- Sometimes beginners will mix up the 'update' button with the actual 'save' button at the bottom. Update is for applying the current changes in your field, filter etc. Nothing is actually saved until you press that 'save' button. Even if you can see the changes in the preview it doesn't mean your changes are saved.

3) Which view are you editing? -- After you saved a view the focus shifts back to default view. If you have a page and a block view under the default view and only want to edit one of them then make sure you select the right one before making changes again.