There are basically 2 varieties of hash. One is extracted oil mixed with a small amount of carbon (I call this extracted hash), the other is mechanically removing the tricomes (I call this mechanical hash). Extracted hash uses a solvent to strip the THC oil out of the herb, leaving carbon, sugars, chlorophyll, etc. This leaves an oil which can be mixed back in with carbon (either ground up herbs, or matter left over after extraction, or whatever really). Mechanical hash usually freezes the tricomes/oil and then mechanically separates this from the rest of the matter. The most common method for making this kind of hash are called bubble bags, and are basically a system of progressively smaller sieves. You freeze the plant matter, and the THC is filtered through the sieves, each removing more and more of the non-psychoactive materials.
Each has benefits and challenges. For a first time without doing a lot of research, I would suggest either doing the bubble bags, or using butane to make oil and then mixing that back into small amounts of the material you extracted from, or a small amount of ground up bud. With butane you could also just leave it in oil form and use it, however it's not quite as convenient, and take a little getting used to before you get good at ways to use it in oil form.