Here is an example of an alkyne.
Notice the carbon chain in RED, and that there is a TRIPLE BOND between two of the carbons.
We say that the TRIPLE BOND is at carbon 1. TWO bromine atoms are added in as well.

3,4-dibromo-but-1-yne

Step 1
The road is 4 carbons long.
Now 4 carbons = but
Notice that the numbering starts closer to where the triple bond is, and not from where the bromine is located.

Step 2
The TRIPLE BOND is at carbon number 1.
Hence we say 1-yne.

We combine but and 1-yne.
Hence the road name is but-1-yne.

Step 3
Now the bromine atoms are found at carbon 3 and 4

We call it 3,4-dibromo
(di means 2 atoms)

We combine all the words into one big word!

Hence the name is:
3,4-dibromo-but-1-yne