AI Tool idea -> MVP. How?

Hello!

I have a pain point that I need to address which I believe an AI tool can help with. The tool would:

• Read text (PDF/text file/web page..)
• Generate marketing/sales snippets to promote the uploaded text

I want the marketing snippets to adhere to certain guidelines:

• I want the tool to group them according to themes (and ;';pl.'\-'p[;/
• I also don't want them to exceed set character limits

I'm a full stack developer with shallow knowledge on LLMs/AI. I know there are tools like LangChain that can help me piece things together, but I don't have a wider understanding of how I can piece things together.

I'm looking for training materials that can help me piece this MVP together.
Is there a how-to course you know of that can take the idea above from being on paper to an MVP?