A couple of things you might find of use.
Titling your pictures -
Open your picture in a simple graphic editor like PAINT (click Start, then hover the mouse pointer over "All Programs", then Accessories", then click on "Paint") you can then add text by clicking on the add text button (Left hand toolbar, click on the "A").
A text box will appear on the picture. Drag a corner of the box to make it large enough to hold your message, then type the message or title. Click "save as", give it a new title and click "OK". You now have a picture with added text which you can upload to your preferred picture hosting site ready for publication.
Resizing your pictures -
Sometimes the picture you want to post is very big and it will take up a lot of bandwidth when it is loaded on the page of the website.
Again, by using the Paint application, open the picture you want to resize. Then click on "Image", then on "Stretch/Skew" which opens a small dialogue box. In the top section labelled Stretch, alter the numbers in both boxes from 100 to something like 50 and click on "OK". If the picture is not small enough, or it's too large still, click on "Edit" and "Undo" and the picture will return to it's original size. Repeat the procedure until you are happy with the end result. Once the image appears to be the right size for you, click on "Save As" and give it a new title. I'd suggest using the original title and adding the word small so you will easily identify it from all your other normally sized pictures.
One final point, regarding both of the above procedures. When the "Save As" box opens, you will see a "Save as type" drop down box at the bottom. Please select JPEG before clicking "OK".
I hope you find this of some use. Of course there are other more sophisticated applications which will do the same job, but the Paint application is the one most of us already have preloaded on our computers.
There is no such thing as useless - you can always be a bad example.