Ollama is an application that helps you download and use AI models. It also has a graphical interface for Mac and Windows, so your first question does not have to begin with commands in a black terminal window.
A simple starting point is to choose a smaller model and give it an everyday task: suggest five names for a gardening journal or explain a word. This gives you a feel for how quickly your computer responds and how well the model follows instructions.
When a model runs locally, the processing happens on your computer. This can be useful when you want to work without a constant internet connection. You need to download the model first, of course, and different models need different amounts of memory.
Ollama also offers cloud models, so check what you have actually selected. The interesting part is the choice: AI can be both an online service and a tool on your own desk.
Source: https://ollama.com/blog/new-app