Summarize the following:
Go to https://www.gmail.com/ in your computer's web browser. This will open your Gmail inbox if you're logged in. If you aren't logged in, you'll need to enter your email address and password when prompted. Do the following: Click the "Settings" gear {"smallUrl":"https:\/\/www.wikihow.com\/images\/6\/68\/Android7settings.png","bigUrl":"\/images\/thumb\/6\/68\/Android7settings.png\/30px-Android7settings.png","smallWidth":460,"smallHeight":460,"bigWidth":"30","bigHeight":"30","licensing":"<div class="mw-parser-output"><p>I edited this screenshot of an Android icon.
<\/p><p>License: <a rel="nofollow" class="external text" href="http:\/\/en.wikipedia.org\/wiki\/Fair_use">Fair Use<\/a><br>
<\/p><\/div>"}. Click Try the new Gmail at the top of the drop-down menu. If you see Go back to classic Gmail in the drop-down menu, you're already using the new version of Gmail. It's in the top-left corner of the page. Doing so prompts a "New Message" window in the lower-right side of the page. In the "To" text box, type in the email address of the person whom you want to contact. To add another person to the "To" text box, press the Tab key after you finish typing the first person's email address. If you want to CC (or BCC) someone, click the Cc (or Bcc link) on the right side of the "To" text box and then enter the person's email address in the "Cc" (or "Bcc") text field that appears. Click the "Subject" text box, then type in whatever you want to use for the email's subject. In general, it's best to keep your subjects limited to a few words. In the large text box below the "Subject" field, type in whatever message you want to send to your recipient(s). While optional, you can easily change the appearance of your message's text, attach a file, or upload a photo: Formatting Select the text you want to format by clicking and dragging across it, then click one of the formatting options at the bottom of the email. Files Click the paperclip-shaped "Attachments" {"smallUrl":"https:\/\/www.wikihow.com\/images\/6\/6e\/Android7paperclip.png","bigUrl":"\/images\/thumb\/6\/6e\/Android7paperclip.png\/30px-Android7paperclip.png","smallWidth":460,"smallHeight":460,"bigWidth":"30","bigHeight":"30","licensing":"<div class="mw-parser-output"><p>I edited this screenshot of an Android icon.
<\/p><p>License: <a rel="nofollow" class="external text" href="http:\/\/en.wikipedia.org\/wiki\/Fair_use">Fair Use<\/a><br>
<\/p><\/div>"} icon at the bottom of the email, then select files to upload. Photos Click the "Photos" {"smallUrl":"https:\/\/www.wikihow.com\/images\/a\/a8\/Android7image.png","bigUrl":"\/images\/thumb\/a\/a8\/Android7image.png\/30px-Android7image.png","smallWidth":460,"smallHeight":460,"bigWidth":"30","bigHeight":"30","licensing":"<div class="mw-parser-output"><p>I edited this screenshot of an Android icon.
<\/p><p>License: <a rel="nofollow" class="external text" href="http:\/\/en.wikipedia.org\/wiki\/Fair_use">Fair Use<\/a><br>
<\/p><\/div>"} icon at the bottom of the email, then select a location and select photos to upload. It's at the bottom of the "New Message" window. Doing so will send your email to the specified recipient(s).

Summary:
Open Gmail. Make sure you're using the most current Gmail inbox. Click + Compose. Enter your recipient's email address. Add a subject. Enter your email's body text. Add formatting or attachments to your email. Click Send.