Luis asked: What are the basic things I need to ride a bike and not be fined?
As far as equipment, you will need proper brakes, lights if riding at night or inclement weather, and a helmet if under 16 years of age.
s. 316.2065 – Bicycle Regulations
(3)(d) A bicycle rider or passenger who is under 16 years of age must wear a bicycle helmet that is properly fitted and is fastened securely upon the passenger’s head by a strap
(7) Every bicycle in use between sunset and sunrise shall be equipped with a lamp on the front exhibiting a white light visible from a distance of at least 500 feet to the front and a lamp and reflector on the rear each exhibiting a red light visible from a distance of 600 feet to the rear. A bicycle or its rider may be equipped with lights or reflectors in addition to those required by this section.
(13) Every bicycle shall be equipped with a brake or brakes which will enable its rider to stop the bicycle within 25 feet from a speed of 10 miles per hour on dry, level, clean pavement.
In almost all circumstances, since you are operating a vehicle, you must follow the same traffic regulations as other drivers. See other posts on this site for the details and applicable laws.
(1) Every person propelling a vehicle by human power has all of the rights and all of the duties applicable to the driver of any other vehicle ….