Designing your own templates

So I have go through about 100 forum posts looking for information regarding creating your own templates or template library. I guess I should have done this before purchasing.

• I have run across questions being asked without any answer or very limited answers.
• I have seen it mentioned to buy a template library and you will see how its done
• I have see answers that state yes you can do that with no direction

Now i'm not opposed to purchasing a library provided there are clear direction on how to create a template if thats the case. However I don't have time to play with code or spend hours figuring out something. Is there actually some kind of documentation out there oh how to do this. I am a small sign shop that offers custom apparel. I want to be able to allow endusers to design banners of different sizes, feather flags, campaign signs, stickers, wide format prints, etc. I see that its clearly capable of doing so. I just understand why the big secret oh how to do it, or have I overlooked something.

Thank you,

Doug