BBCODE Guide for Authors on Forums like Kboards: Learn How to Build an Awesome Signature!
BBCode is something that forums use for allowing very simple html and bracket commands to be used to display things such as images and links for a positive user experience.
To an inexperienced user it can seem like an incredibly daunting task to try and understand exactly how all of this code works, but once you get the hang of it, you will find out it is actually quite simple!
Adding a Link:
For an URL, use this code and replace the part after url= with your own url:
[url=https://www.example.com]My Awesome Text![/url]
For an image, replace the URL Image (find an image, right click, copy image address!):
Telling it height=125 tells the BBCODE to make it a certain size. If you use multiple images, this will help you make them all consistent! I wouldn't go higher than 150 because then you're taking up a LOT of space for your images and you might get a message from the moderators that you have a bad signature! Plus, it's a bad user experience and you'll annoy people!
Putting it together
You just replace the text with the Image and it makes the image clickable because you wrapped it inside the clickable URL!
If you want to make your truly awesome signature, just string blocks like this together with a space between them and you get multiple images. Then, just string things like that together to create multiple images, or link out from a banner advertisement.
If you have your OWN affiliate account and link to amazon sites, DO NOT include your own affiliate tag on those links that you are embedding into another site's signature. If you don't own the forum or are not affiliated with it, Amazon will close your account if/when they find out your links are on places they shouldn't be.
Your affiliate account is for YOUR listed websites that you own (and social media associated accounts). If this is your situation, then you should be linking to your own website which CAN have affiliate tags, not Amazon. Then, readers can browse and click through to Amazon the way they are supposed to.
Hope all of this helps! If you want some more information about Author Resources, then check out this link.