I would start off with a standard hook. If you don't have any picks yet and want a recommendation I would go with the Sparrows Tuxedo kit -
https://www.sparrowslockpicks.com/product_p/tux1.htm Sparrows lists their prices in Canadian dollars so when converted to US dollars the kit ends up costing about $32 plus shipping. Another brand people seem to like is Southord. You can find their picks at
www.lockpickshop.com and you can get 10% off if you sign up for their newsletter or by entering the code LockLabTribe at checkout. That code is from
www.lock-lab.com which has a lot of useful information for beginners. The guy that runs the website is named BosnianBill and he has a lot of good informative videos on YouTube. Just remember that you don't need a huge set of picks in order to start out. If you want to learn how to pick locks the main pick you will be using is a hook but it's nice to get a set so you can try different picks to see what you like. As far as picking goes I would start by pinning up two or three chambers in the rear of the lock and as you get better fill more chambers working towards the front of the lock. For me it was more difficult to pick the rear pins because they were harder to access so by practicing with them first and working to the front of the lock you will find that it will get easier because the front pins are easier to access. That's how I did it and it seemed to work fine for me.