How do i create a gym plan?

there are many programs available on web if you search for

If you are not experienced and are just starting, creating your own plan is not a good idea.
Start with defining your goals: lose weight? increase endurance? flexibility? strength? gain more muscle?
Then figure out what you like doing: workout on your own? look for classes? a sport? being outdoors?
Finally figure out a draft schedule: e.g. if you can exercise 4 times per week, and you know you love running, you can do this twice per week and then you need to fill the other 2 workouts. Or if there are some classes you love 3 times per week and that is the max you can dedicate to the gym, you have your answer.
If you are looking for what to do on your own at the gym, most places offer a basic plan they can give to new members. It might not be perfect, but it will be better than anything you will come up with on your own as a beginner.
Alternatively, google is your friend : look for beginner programs, again based on your preferences and goals. E.g. beginner strength training program, then find somethign that works with the equipment you have and the time you can dedicate.

I exercise at home and use FitnessBlenders programs. You can also print them and take them to the gym to use.
The answer to your question: I didn't create one, I bought it. Many on the site are free.

Just follow a structure program: http://community.myfitnesspal.com/en/discussion/10332083/which-lifting-program-is-the-best-for-you/p1

Creating your own program will just lead to an ineffective program and reduce progress.