So open sony vegas (I have 12 but w/e) and open your video (or Image, I'm just gna use an image for this example
My screen looks something like this

Now on the right of your media you should see 2 icons "Event pan/crop" and "Event FX"
First click on "Event pan/crop"

With that you can zoom in/out, rotate, use keyframes and forget arround on your first time.

Basic things you should know ^^

In this is zoomed in my media over 30 frames (1 second if your FPS is set to 30, obviously. I usually set mine to 29,970.)
Now lets insert some text, rightclick the space under your media and select "Inset video track"

Now that we have inserterted a video track, we can insert some text (Or images, just drag them over the track.)

The default time is 5 seconds, you can simply edit that by dragging the media shorter or longer or changing it in the settings.
Some basic things you also should know vv

Now if you accidently closed the screen you can just re-open it with the generated media file (Oh and also activate the 'solo' button)

Now forget a bit arround with these things, if you just want to add another text but it overlaps something else just create a new track
Now if you want to change color 'n stuff just go to generated media and clock on the clock on the left from the color slector thingy
Its should bring up a timeline at the bottom and just edit the colors 'n stuff

(Note: you probably want to place the 'keys' closer to eachother from the example) (Also 11/10 typo)
If you have any questions just PM me or something.
I reccomend to start learning sony vegas and then start using After FX since it offer allot more but its much harder to use.