I want to learn how to weld?
I know there are lots of types of welding, what is the best for general this-and-that stuff
thanks

PDF Downloads
As a Pro member, you will gain access to download any Instructable in the PDF format.
You also have the ability to customize your PDF download.
. Stick is your best bet for general, all-purpose welding, but MIG (good for sheet-metal welding) or TIG (especially if working with Aluminum) might be a better option.
.
. A local Vo-Tech school probably offers (night) classes in Welding at a bargain price.
MIG is pretty easy to do, but can be hard to make good structural welds.
Stick welding is harder, but tends to be for heavier sections than cheap MIG sets (say 1/8th inch, 3mm up)
Best results are obtained by TIG welding, but they usually cost more than stick or MIG sets, and take a lot more skill to use.