DD, lol, I am an OLD dog as well, and it's like having a few...

DD,
lol, I am an OLD dog as well, and it's like having a few extra brains at your fingertips now to keep up with the young fella's.

But don't overthink it.
Start small, then layer it up to suit your needs.

Google has free access to build out GEMS now
- not sure how long for.. As Windows had them in Copliot, then canned them.

https://blog.google/products/gemini/new-gemini-app-features-march-2025/

ChatGPT versions.

https://help.openai.com/en/articles/8554397-creating-a-gpt

YouTube is your friend on this, but as I mentioned in my first post, it's all about the prompts and knowledge.

Here are a few good GPT builders to use to build out with..

Mine
https://chatgpt.com/g/g-bUO4jRqDN-gpt-crafter

Then, a great one cooked up by a French programmer.

https://chatgpt.com/g/g-iS3LMW2lB-gpt-builders-assistant

Here is a starter prompt that can be used across most the LLMs to get good outputs..

https://github.com/dgcruzing/Prompting-Workflow/blob/main/Financial/GPT/Market%20Maestro%20V1

I have a few things in the pipeline with agents and APIs, so as I play with them, they will end up on GitHub.