There are beekeeping clubs in every state and probably one near you. You should look up and attend a meeting with your local club. Here in Virginia, you can find a club at the using an online map via the Virginia State Beekeepers Association. While you are joining a club, you should also:
Locate a mentor (the club can help). Mentors will assist and guide you through your first year and beyond!
Visit the library or buy some books! My local library has hard-copy and digital beekeeping books. I suggest you start there, then move to Amazon.
We have a handy infographic on everything you will need to get started! BFBs suggests starting and standardizing on 8 frame, medium equipment. Eight frame boxes are lighter than 10 frame boxes by 20% to start. Once the bees fill a super with honey, it is 30% lighter than 10 frame equipment! Traditional equipment setups include two "deeps" as the brood chamber, which is about equal to three medium boxes, but you don't use deeps for supers (honey boxes). By using medium equipment, you can interchange boxes easily.
You can buy equipment assembled or unassembled. Back Forty Bees supplies assembled hives for folks who want to start in beekeeping without having to construct a hive.