This list is a brief summary of the fields on the input pages for the default content types included in the Drupal core, as well some common content types added by modules.
Blog entries on Drupal have only two fields, both mentioned above, "Title" and "Body".
Book pages as well have only the two fields, "Title" and "Body", and the Title is required.
Book pages are not placed into a Book by default: one must select a book or create a new book in the 'Book outline' on the editing page. If the option "Create new book" is selected, then the newly created book page becomes the first page of the book and the new book is shares its title with the first book page. For example, if this page was placed into a new book outline using this option, the book would be called "Content types and fields'".
Comments are enabled (read and write) by default on book pages.
Book pages are not promoted to the front page, by default.
The content type Forum topic is slightly different from the other content types. The 'title' for Forum topics is called "Subject". Also, when creating a Forum topic, it is possible to select the Forum in which the topic will appear. Only users with appropriate permissions can modify the Forum containers, so contact your admin if you need access.
Drupal forum topics have three required fields: Subject, Forums, and Body. Subject is basically equivalent to Title for other content types, and it is the subject for the single forum topic.
The Forums drop-down menu allows you to select in which forum the topic you are creating should be placed.
The Body field in a forum topic is where you would provide a narrative to start a discussion or ask a question or two that you want answered.
Read and write for comments are enabled by default for forum topics - comments are one of the key aspects of forums.
Forum topics are NOT promoted to the front page by default.
The Image module must be enabled and setup by a site admin to be able to post images to a site. Images have several fields on the input page. First, is "Title", which functions as with the other content types - it is the title for the content page. The next field is the "Image Galleries" drop-down menu. Image Galleries are a way of organizing images on a Drupal site, and are similar to Books in that Galleries can have child Galleries. Only users with appropriate permissions can edit the Galleries, so contact your site admin if you need access. The third Image field is the "Image" field where one selects the image to be uploaded to the Drupal site. Simply click the "Browse" button to locate the desired image on your local hard drive or network. The "Body" field for an Image is a text area to enter a description or narrative about the image.
Pages are the basis of most Drupal sites and are basically synonymous with a typical HTML website. Pages only have the two main fields, "Title" and "Body".
The Poll content type allows you to create survey-type multiple choice questions for users to answer. The "Title" field is replaced by the "Question" field for Polls. On the Poll input page, there is a box called "Choice". By default there are two answer choices enabled to enter the possible answers to the question (e.g., "Yes" and "No"). You can add more answer choices by clicking the "Add another choice" button. The Poll settings option box allows you to customize the Poll, by changing its active status or the duration. The Poll status is set to Enabled and the Poll duration is set to Unlimited by default.
Stories fall somewhere between Pages and Blog entries on Drupal sites. They are typically used for making announcements, promoting events, etc. The only two fields in a Story are "Title" and "Body".
Webforms are exactly what they sound like: forms with various fields and data selection methods that appear across the interweb. Webforms have many create options, a bit extensive for this short list. Once you are comfortable with creating other content types, check out the Webform input page. Keep in mind that this input page allows you to create the Webform itself and not the contents of the Webform. Once the Webform is created, you can navigate to it to add fields.