Maybe i am making a mistake. During the course of my project i click on the flppy disk icon (to save) is this the correct habit i have gotten myself to do?
Yes but here's a tip.
It's good practice to Save As "MyProject-01.veg"..."MyProject-02.veg" etc every so often. Not just in case something goes wrong but also in case you do something wrong that's difficult to back out of.
As long as you're clicking the floppy disk icon in the upper left corner of the screen then yes you're saving your project. The one over the preview window only saves a single frame as a still image.
Every project that comes through my door gets it own 3-4 letter and 2 number code. Example: Hibbard Haller Wedding 2007 would be HHW07. Every single file associated with that project gets that same tag and is placed in it's corresponding folder. All pictures, captured video, veg files, music, everything gets tagged. I never loose a piece of media for a project. It takes just a few seconds to add it and the saftey of it is priceless.
Media file names and project file names are completely independant. Renaming your project file changes absolutely nothing else at all, anywhere. All your media files will still be in exactly the same place they were with exactly the same names, because changing the project name doesn't change anything else.
Also, if you use the 'File' drop-down and then choose "Save as", it will open the very file that they are currently being stored into. I have created a file that is labeled Vegas Vegs and that's where I store them all. I actually have two separate Veg files, because I have more than one version of Vegas and you shouldn't get the Vegs from different versions mixed up.
Generally Vegas doesn't store your media files or choose where they will or should. You put them wherever you want them, then tell Vegas to look there. Usually the only thing Vegas puts anywhere are the .veg files you create when saving your project and the finished renders. Now, it is true that Vegas' vidcap program will default to putting capture files in your My Documents directory. This is a bad thing. You should always create a new directory for each project somewhere first, then tell VidCap to put your files for that project in that directory. Then you won't have to look for anything anymore.