[shokwave]

Start with -just- the bar.

Or get Starting Strength, by Mark Rippetoe, which has about 70 pages of instructions and diagrams on the correct form of each lift.

Or find a gym that has a personal trainer willing to teach you the proper form.

Or do it, record yourself with a camera of some sort, and find a community of weightlifting people (/r/fitness welcomes this) to correct your form.