God, The Almighty Creator, said in His Final Book to mankind, the Qur'an (translated) "And worship God (The Indivisible Creator) Alone, and don't worship anyone (or anything) with Him" (4:36)
This link (above) will help with learning to read arabic scribble. The arabic scribble uses words you have already read, making it relatively easy to read
To readShaikh Saalih Fawzaan’s explanation (translated) of The Four Principles, go to spubs , click on Tawheed, click on Readings in the Four Principles (bottom of topics)