Once you have entered all of your tasks with their particular details, your right pane should show a nice bar chart. Dependencies are indicated by arrows between the tasks, and milestones are indicated by a diamond icon and a date. If resources have been assigned, the resource names will be displayed next to the tasks. Documenting a task as completed will place a check in the Indicators column and the bar in the right pane will be filled with a line. If a task is partially finished, the bar will show a line of the appropriate length inside of it (i.e. the line will fill 50% of the bar to indicate a task halfway completed).
You can fairly easily make adjustments to how the Gantt chart appears. If the default timescale needs to be changed to illustrate a different timescale, you can adjust it. Just right click on the top portion of the right pane where the dates are displayed. Then click on the Timescale link, to get another easy-to-use pane for various options related the timescale of your Gantt chart. You may also specify non-working time, which can be helpful later on for making adjustments to tasks.
The Gantt Chart Wizard is another useful option that appears when you right-click anywhere within the right pane. Walking through this wizard gives you further options and resources to customize what information will appear, and how it will appear within the right pane of your Gantt chart. So if certain irrelevant data is displayed within the right pane this is an easy way to adjust it.
Right-clicking in the right pane also provides you with a options to:
Right-clicking on individual items within the right pane offers you a way to change that particular item's look and feel, and also adjust a task's detailed information.
It's important to note that in Project 2007 - as with all of Microsoft's Office Suite - you can complete a task multiple ways. So, if you're more familiar with using the menus at the top than using that right mouse button, that's fine, too. Not everyone works the same way, so it's nice that Project 2007 is flexible in this regard. Most of the things mentioned here can be accessed from the menus as well as using the mouse buttons.
If you're looking for sample forms and downloadable templates, check out Bright Hub's resource guide Over 50 Free Project Management Templates and Sample Forms.