I don’t have any links so show how it’s done, I just tried it with my own email program (which is Windows Live Mail)
basically, try the following:
1) click Print Screen to take your screenshot.
2) Open your mail program, whatever you use, and click whatever you have to click to start composing a new email.
3) Click inside the body of the mail, where you would normally type the message, and then press Ctrl-v (paste from clicpboard).
The image should then appear actually inside your email.
If it doesn’t, then you need to do it in Word:
1) Open Word and start a new document
2) Click ctrl-v to paste the screenshot in the document.
3) Click “save as” and save it with a name you can remember, make sure you know what folder it’s in.
4) Go back to your email program, compose a new email and click whatever you need to add an Attachment (usually looks like a paperclip).
5) In the dialog box that pops up, browse for your Word document and click “Open”. The document will now be attached to your email.
I hope this explains it well enough.