Have you heard of "rosin" tech? 

So you've probably heard of shatter, wax, budder, etc. These are all variations of oil that have been processed in different ways, usually with chemicals like butane or isopropanol. Well, rosin gets you the results without the chemicals. "Dabbing" is the process of smoking concentrated cannabis. 

It's a pretty simple process, really. I laugh about it because it's something I've always had the means to do, if only I knew. 

What do you need? 
A hair straightener. Such as: http://www.hairstraightenerstudio.com/wp-content/uploads/Solia-TourmalineIonFlatIron-360x160.jpg
Parchment paper. Like this one: https://images-na.ssl-images-amazon.com/images/I/41z1RRH9BPL.jpg
Cannabis, ideally dense buds with some moisture to them. Any strain will do. 

That's it. 

You're going to take a small but full bud of cannabis, ideally weighing in the area of about .3. Breaking up buds will destroy your yield. Take a small sheet of parchment paper and fold it. Put the bud in between the folds of the parchment paper. Turn the straightener on. I use the lowest setting, but there is a lot of feedback that suggests it depends on the strain and the moisture content.  Now you squish the bud that is held between the two folds of the parchment paper, applying as much pressure as you can. Holding for about 12 - 15 seconds. You should hear some sizzling, that's normal. After the time has passed you open the paper and find something like this: https://i.imgur.com/GBOIOaU.jpg

If you're looking for a way to make a small amount of "shatter" to try out a "dab", this is the way. If you want to try this on a larger scale, check out something like this. https://www.youtube.com/watch?v=vxzgtXSK0BI

This is just a quick explanation, very basic. There isn't much to it really, but the temperatures, weights, and everything in between are all going to be different every time. Even the same strain will sometimes give different results. I recommend researching on YouTube or asking questions below and I will do my best to get you accurate answers.