There are many detectors, here are a few well known manufacturers Bounty Hunter, Fisher, Garrett, Minelab, Teknetics, Tesoro, Treasure Commander, Whites -
Tools of the trade, some of the following items are used while detecting,
Hand diggers, pinpointers, Shovels, Sand Scoops, knee pads just to name a few of the main ones.
Then there are the forums, a place that has so much information it can be overwhelming. But all the information can be the key to getting started properly. There are many forums out there, they are free, many members that have years of experience and knowledge that freely share it. It's a place that's worth spending the time reading and learning about the hobby. Plenty of pictures of finds, plenty of information on different units. People that help others learn the hobby, all in one place.
Friendly Metal Detecting Forum and TreasureNet are a couple places to get you started. Stop by and read a few stories, view a few pictures of metal detecting finds and enjoy. If your new to forums, just stop by as a guest you don't have to be a member to look.
Ultimate Beginners Guide to Metal Detecting
Here are some Youtube Metal Detecting Tips & Tricks Videos (enjoy)