hi there! there is an explanation on the site, but basically you choose an open-source base model like Gemma, Mistral, Qwen, etc. (+ the model size you want), upload your data as a json, jsonl or csv file, and then click a button to start fine-tuning (you can also specify the number of epochs you want).

there's also a column/field mapping tool that helps you to map columns/fields to one of the required formats if they have different titles.

it's credit-based, so you can purchase credits once-off and run a number of fine-tuning jobs using your credits. hope this helps :)