On the summons that you give to the tenant will be a return date. This is the date by which the tenant must answer your complaint. If the tenant does not answer the complaint, you can request a default judgment, which means simply that you win. If the tenant answers the complaint, a trial date will be set at which both of you can argue your sides in front of a judge. If you win, the tenant has 48 hours to appeal. If the tenant appeals, the case will go to a higher court. If the tenant does not appeal, after the 48 hours has expired a "writ of restitution" will be issued to you, allowing you to retake the premises. Remember that this does not mean you can immediately go and physically remove the tenant. You will need to take the writ to your county sheriff and schedule an appointment for a "civil assist." This just means that a deputy will come and oversee the process as you remove your tenant's belongings.
If you think you have taken on more in this eviction process than you can handle individually, you can always seek the advice an experienced Colorado evictions attorney.