How to connect to localLLM like OIllama while practicing ?

OpenAI doesn’t offer API Keys for free, one has to pay for it.. 

While understanding APA features of AA360, I would like to use Ollama local API Keys as I will be doing very basic hands-on to understand various features. 

Is there any better alternative which you have solved this problem in a different way, do share, 

Looking forward for your guidance on this to speedup my learning journey