Techniques
Some readers may be interested in Gunpla, and might have some questions.
"What spray paints do you recommend?"
"Is there an advantage to using a top coat?"
"How much time does a model take to build?"
Those are all great questions. What you're going to want to do is get comfortable cursing. When dealing with hundreds of small, fragile plastic pieces, as well as several different cans of spray paint and coating, something will go wrong. That's natural, but you need to be prepared. Therefore, I recommend preparing a good salvo of curses. You'll want to go with the most guttural sounding ones with the least syllables. You should preferably use ones with vowels such as "u" and "o", and ending in either hard "k" or blunt "nt." sounds. When that knee joint snaps, and it will, you're going to need to be able to curse immediately, loudly and properly. Don't force it - just say what comes out naturally. The problem you encounter will help you choose. For example, a string of curses following a slowly building, frustrating issue (such as a stuck part) will differ greatly from a sudden, surprising shattering of a piece. Below are some real life examples that I encountered personally.
Example 1
I put the neck piece under the head, but didn't tuck the connecting pieces properly, so I had to take it off and start over. The neck was stuck on too tight, however, so I took a pair of pliers and tried to pull it off... when suddenly *SNAP*!
"Oh f*ck!!! F*CK!!"
Example 2
The arms have several pieces of armor on them, including a small piece above the elbow. I placed it on the left arm, but it didn't fit right, so I took it on and off a few times and then it just crumbled into a bunch of pieces...
"You've got to be f*cking kidding ME!!!!!"
I hope this helps. The hobby can seem overwhelming at first, but with a little guidance, there's nothing to be afraid of.