Someone once described baking bread as an inexact science but it's more art. It's also very easy. The basics are flour, yeast, salt and water. So you start with different mixes of flours. Start simple with AP and bread then go to whole wheat. Try adding vital gluten. Vary the salt in the mix. Then experiment with some oil and maybe some honey or molasses or eggs. Use your imagination. With basic artisan breads try some herbs of various kinds.

It's all fun and educational.

I live in high altitude country so I have to modify things for them to come out so I'm used to experimenting with all baked goods.