Cats are so innocent but easy to train

Train your cat NOT to jump up on kitchen counters, climb on the couch, scratch on furniture, get in the laundry basket, or whatever other thing you want to stop.

[edit] Steps

Get a small trigger spray bottle and fill it with water, in case your cat does not care about the citrus smells.
When the cat starts doing the behavior you want to eliminate, simply squirt at the cat and not on the cat with the water. Do not squirt your cat in the face. Next time, all you will have to do is pick up the spray bottle, and the cat will stop doing what you do not want him to.
The cat will immediately stop the behavior and run a little distance away. If he didn't see you, he'll think the behavior he was doing triggered the water, and he'll soon learn that doing that behavior might not be a good idea. If he did see you, he can get sneaky and only do the behavior when you're not around.
Repeat as many times as necessary, but I guarantee it won't take too long before the cat stops the behavior.
One thing I pair with the squirt bottle is a noise such as "PSSSSST" This noise causes cats to jerk to attention without the water, and once it is paired with the water they will stop anything they are doing when you make that noise regardless of whether or not you have the squirt bottle.

[edit] Tips

Cats are sneaky, which is why it's best to not let your cat know that you're the one squirting him. If he sees you, he may only do that behavior when you're not around - and you want the behavior to stop ALL the time.
If you have a new kitten, teach them from day one, not to go on counters, or tables. Do not feed them on or near the table, so they will not look for food on there.
You can also try putting 'Sticky Paws' on counters or places you don't want your cat to go. Cats loathe their paws being sticky, and will avoid the sticky surface.
Making scratching posts available to your cat greatly reduces the likelihood that they will scratch your furniture. It is important for cats to be able to scratch on things, and if nothing is available your furniture seems like a great alternative. If scratching posts do not seem to be getting their attention, try treating them with catnip spray or flakes.
If you can't afford a scratching post, try to find a long tapered pilone and glue some old, soft carpet to it. This works great for all ages and sizes of cats.

[edit] Warnings

Never attack a cat! It doesn't work and could traumatize them, especially if they're still young. If you need to reinforce your "No," try clapping loudly.
This may not work with all types of cats. Some long-haired cats may not feel the water due to the nature of their fur. Find a squirt-bottle with a strong squirter, or try an alternative method.
Rarely, a cat may actually enjoy being squirted. In this case, it is better to use noise as a deterrent. Either making a "pssst" sound or shaking a can of pennies can work well.