There's 3 art programmes I would thoroughly recommend:
GIMP
Pros - It is easy to use and has many cool features. It is easy to get a professional touch to your art. There is a wide selection of tools and brushes for you to use and makes it fun to just experiment with them.
Cons - Can be a bit confusing to beginners.
If you use this, I'd recommend just experimenting around with it, seeing which bit does and stuff. x3
FireAlpaca
Pros - The lines come out very smooth and you can still get a professional look to your art. It's really simple and easy to use, perfect for beginners.
Cons - Not many features or brushes.
Serif Drawplus x4
Pros - Although you have to pay to get the full version, you can get the free version for it. (Doesn't let you use as many features as the full version) This programme is very good for those who draw with a mouse because you can edit the lines and such that you draw VERY easily, and the lines come out very smooth. So once again, you can get a nice professional look to your art. There are quite a few features to this that are just.. Amazing. It's a lot of fun to experiment with this one.
Cons- You have to pay for full version.
Here are some of my tips:
Before you draw anything, it's best to sketch out basic shapes first before you draw the actual thing because it makes it easier to get the shape of the object so be sure to take advantage of the basic shapes tools that you will find on most art programmes.
Drawing the outline first on paper and then scanning it onto your computer so you can colour it digitally and then go over the outline is much easier.
Do not copy exactly but make sure to use plenty of references! They are a HUGE help.
I'd recommend getting a drawing tablet because it makes drawing digitally soooooo much easier.
Uhhh, and that's it. Sorry if it's a bit too confusing for you but I hope I helped! :3
To start with, you don't need to go pro. It's very hard for you. I recommend you to try to draw simple things first.
http://www.youtube.com/watch?v=qqon8BQTcK0 (http://www.youtube.com/watch?v=qqon8BQTcK0)
Start with this kinds of style and if you try your hardest you will improve. This is my first video I saw and then got interested.
My drawings before:
(http://i48BannedImageSite/29yqkhg.png)
And after: (BIG IMPROVEMENT)
(http://i43BannedImageSite/2rfplao.jpg)
(http://i42BannedImageSite/2lc69z6.jpg)