You have the right idea by wanting to plan your first grow before actually starting it, I remember my first grow started by accident and then I was hooked. First things first you should figure out if you are going grow in a room, closet, or grow tent, then after knowing that you can start choosing your light based on what your grow space is to make sure you have good coverage. Next, you should start thinking about pots and soil, most people use fabric pots or plastic pots just depends on what you like and then when choosing your soil remember it should be light and fluffy for good aeration and along with being able to hold some moisture but not too much, the soil I use is Happy Frog soil and it works like a charm. Now that you have the basics you can start looking for beginner-friendly strains, here's a link to The Best Autoflowering Strains for Beginners from FastBuds: https://2fast4buds.com/news/best-autoflower-strains-beginners.
Hopefully, this was helpful and If you need any further help don't be afraid to send a PM, I'm always here to help.
Good Luck !!!