1. For text Fields - useful for when you want a user to enter letters or numbers into a form.
To create a text field, you simply need to make an input tag look like this.
<input type="text" name="Age">

2. Radio Buttons - these handy little devices allow a user to select an option from
So say you wanted your users to tick either"male" or "female"
<input type="radio" name="sex" value="male"> Male
<br>
<input type="radio" name="sex" value="female"> Female
This would display something like this in a browser!

3.Check Boxes - Well they are.... check boxes, its pretty self explanatory!
<input type="checkbox" name="bike">
I have a dog
<br>
<input type="checkbox" name="cat">
I have a cat
This will simply place checkboxes with the options next to them!