Make sure that you end your filename with a .htm or .html extension. For example, if you start out typing your tags in all caps, always do. You will find that when it comes to de-bugging your documents it's easier to recognize your code when you are consistent in style. By the same token it is a good idea to remain consistent in how you name and organize your files. While at first it may seem like a good idea to put everything in a separate directory, you will soon find that it is a pain to type out long URL's.
Simplicity is the key.
There is nothing that makes one of these styles better than another, just be aware that mixing them can cause a lot of confusion while typing. Put contact and modification date information at the bottom off your page. This gives users a way to get in touch with you to make comments. It also tells everyone how current the information is. These links will take you to lists of on-line helper applications and documents.