There are no special knots that I use really.
If it is being tied off to an eye.
If there is one loose end. I will often use any kind off loop in the end. Pull the loop through the eye, and then pool the other end back through the loop. You can only do this if the other end is not attached (or not attached yet).
I will also use a reef knot, and then apply a dab of CA glue (Superglue) to fix it.
Most lines need adjustment, and your instructions will tell you to use a bowsie. If the instructions are not clear come back to us.
The only exception on knots is if you are using monofilament nylon, or even Dyneema, as it is very slippery and needs special knots.
What model are you building?