I am currently following a Linux tutorial and right now I am trying to learn about shell scripts. The tutorial instructed me to make a new .sh file, so I made a file called test.sh. I was then supposed to use the command "chmod 755 test.sh", and I did. Next, I had to add the following lines of code to the file:
I put these lines of code in, and saved the file. Next, I was told to execute the script by using the ./test.sh command. However, this resulted in the following error:

corallis@home1:~/Desktop$ ./test.sh
./test.sh: line 2: echo Hi there: command not found
./test.sh: line 3: echo what is your name? (Type your name here and press Enter): command not found
./test.sh: line 4: read NM: command not found
./test.sh: line 5: echo Hello : command not found

Im really stumped as to why this is happening. Im very new to linux, Ive been using windows for the last 8 years. It seems to me as though I might be missing a file of some sort that contains the shell scripting source code, or maybe a path that is supposed to point to the shell scripting source code is incorrect. Then again, Im just assuming there is some sort of shell scripting source code, so I could be way off. Thanks to anyone in advance who can help me.

1. /bin/sh exists, right? Make sure.
2. Creating a file, THEN adding to it, is a little bit odd. Can you do "cat test.sh" to verify that the above lines are the ONLY contents of the file? It works fine for me...

corallis@home1:~/Desktop$ cat test.sh
#!/bin/sh
echo "Hi there"
echo "what is your name? (Type your name here and press Enter)"
read NM
echo "Hello $NM"

Thats the output of "cat"ing the file. Also, I checked and /bin/sh does exist. I went into the /bin folder and found a green sh@ file inside of it. Am I correct to assume that is the file that is required?

Try typing in 'sh test.sh' ... if that works, then it isn't telling sh to interpret your file right.

What is the output of ls -l /bin/*sh? It needs to be executable, so it should look something like
-rwxr-xr-x 1 root root 614K 2004-02-23 01:47 /bin/sh
or
lrwxrwxrwx 1 root root 4 2004-02-24 09:57 /bin/sh -> bash

if it isn't executable, you have issues.
I'd generally recommend using /bin/bash instead of /bin/sh, bash is the latest revision.