Find out if there's a local club near you via the official website. Most run a Friday event called "Friday Night Magic" but if you contact them and say you have a new player who wants to learn they will be able to help you out with what local events/meetups there are. If they run a "sealed" event, that would be perfect (everyone opens ~6 packs of cards and makes a 40-card deck using basic land cards (usually provided by the organiser). It means people with big collections are not at an advantage. The entry cost is usually just the 6 packs (and you keep all the cards you open).
If you mean for learning the basic rules, there's no substitute for an experienced player, but youtube videos will give you the gist of it.