To succeed is very difficult, and will require a lot of effort.
A band can be made with relative ease and requires little to no effort, so here are instructions for those who don't want a difficult task.
Step 1: Step One: Getting the Members
The ability to play those instruments is more of a luxury, not a necessity.
However it is recommended that at least one member should be able to play theirs.
Also make sure that each member plays a DIFFERENT instrument, so that you don't have a band of 5 guitarists. (As cool as that would be)
Step 2: Step Two: Naming the Band
Your name should be very witty, and catchy. Like The Rolling Stones, Nirvana, or The Band.
You should brainstorm names with the group, find the ones you like and begin eliminating them.
Fire band members who don't agree with you.
Remember, once you find a name, research it to see if it's already taken.
You don't want to come up with AC/DC and find out some Australian guys already took it.
Fun Fact: The Beatles weren't always called The Beatles, their old band was The Quarrymen
Step 3: Step Three: Jamming/Practicing Together
For your first practice, you should all agree on a group of songs to learn and play together.
If you're anything like my band, it will be a horrifying failure.
But, as long as you don't break down and cry, it should be considered a success