How do I use Notepad++ to validate my work?

Adrian Diggines

<!DOCTYPE html>
<html>
<head>
<title>Web Form Example</title>
</head>
<body>
<h1>Analysis Report-Music Store</h1>
<form method=“GET”>
<label for=“firstname”>First Name:</label>
<input type=“text” name=“firstname” id=“firstname” />
<br />
<label for=“Last Name”>Last Name: </label>
<input type=“text” name=“lastname” id=“laststname” />
<br /><br>
Date of birth: dd/mm/yyyy <input type=“text”>
<br><br>
Email Address: <input type=“text”>
<br><br>
Preferred Telephone Number:<input type=“tel” name=“usrtel”>
<br><br>
Address Line 1: <input type=“text”><br>
Address Line 2: <input type=“text”>
<br><br>
Suburb: <input type=“text”>
<br><br>
State: <select name=“State”>
<option value=“act”>ACT</option>
<option value=“nsw”>NSW</option>
<option value=“nt”>NT</option>
<option value=“qld”>QLD</option>
<option value=“sa”>SA</option>
<option value=“tas”>TAS</option>
<option value=“vic”>VIC</option>
<option value=“wa”>WA</option>
</select>
<br><br>
Country: <input type=“text”>
<br><br>
Zip/Post Code:<input type=“text”><br>
</fieldset>
</form>
<br/>
<input type=“submit” value=“submit” />
</form>
</body>
</html>
<br>
<br>

<address>
Written by <a href="mailto:D85031873@my.chisholm.edu.au">Adrian Diggines</a>.<br>
Student ID:D85031873.<br>
11 Westminster Crt, Somerville, Victoria 3912<br>
Australia
</address>

</body>
</html>

Result

Analysis Report-Music Store
First Name:
Last Name:

Date of birth: dd/mm/yyyy

Email Address:

Preferred Telephone Number:

Address Line 1:
Address Line 2:

Suburb:

State:

Country:

Zip/Post Code:

Written by Adrian Diggines.
Student ID:D85031873.
11 Westminster Crt, Somerville, Victoria 3912
Australia