With all that said Id like to wish you the best of luck. Remember that determination and an iron will are your best friends so don't give up and keep trying. With enough effort anything's possible!
In case this guide has made you interested in how phpBB templates work from a more technical point of view, there's a great article in the phpBB Knowledge Base. You can do a lot of fun stuff with templates and by modifying phpBB, and it's not as hard as it may seem. Break the learning process into small steps and you will soon be standing on the shoulders of giants.
Should you have any questions regarding this guide or template design in general feel free to post at my forums here.