Welcome to Islamicboard, it's great you want to learn and discover (something we all really need to do in this day and age).
You'll find this forum has so much information and interesting discussions, and we are more than willing to answer any questions you'll have inshaAllah. I hope you enjoy your time here :).
Within Islam, there are differences of opinion on certain issues - however it is important to keep in mind that on the fundamental basics, there is a general consensus, differences tend to appear in the finer details. You've probably heard of the Sunni and Shia divide, which is the largest division within Islam and they do differ a lot theologically. Sunni's however, make up 85-90% of all Muslims worldwide.
Within Sunni Islam, there are different schools of thought, called madhabs. The four central ones are Hanafi, Hanbali, Maliki and Shafi. They do differ in some details on various aspects of Islamic rulings and rituals, however as Muslims we regard them all as equally correct and valid and it is our duty to respect the differences of opinion within each of the madhabs.
This forum has a balanced and thorough approach to the central tenets of Islam, you'll find most of what you need to know from here.
I would recommend to anyone learning about Islam to read the biography of the Prophet Muhammad :saws: (the one written by Martin Lings is very good) and the stories of all the Prophets in general (the one by ibn Kathir is a classic).