Hello Cole Welding, the short answer to your question is, it isn't hard at all if you know what you're doing and how to do it. I'm not trying to be a smart a**, just trying to put it into perspective. If you've never done it or if you have done it in one industry and not another it can be very different depending upon the application. GTAW roots on pipe or tubing can have a myriad of differences even though they are essentially providing the same thing, a root pass. You will need to determine where you are going to target your work and then find out the procedure that they are working to. Sometimes the root pass on pipe is done without any purge, other times a past flux is applied to the inside of the pipe, yet other instances nitrogen is used, others still might use argon as the purge gas. If a purge gas is used it might require the use of a purge dam or something of a similar nature(this could include commercially available dams, bread, newspaper, these depend on the application), joint tape is likely required when an internal purge is specified. I think you are probably getting the idea here. Most of the folks that I know who weld roots in pipe with GTAW have a very specific regimen that they follow for making a specific weld. They use a certain size cup for the root and then change the size of the cup as required for different joint depths and configurations. They also typically "walk the cup" and use a "laywire" technique, this is another reason for a specific cup size. Tungsten grind angles and compositions can be important.
     If you can, either see about hooking up with another welder who is welding in the area that you have an interest in and watch and learn. Or possibly go to a training center of some sort that can teach you or refine the skills that you already have. Good luck and best regards, aevald