Logo for my teaching academy called "Sriram Classes "

As described above , how can you help my with the above request .I need a logo for youtube videos / Logo to be printed on my books I am not aware of technical terms in this field ,so request you to include explanations or use simple words. A brief background - i teach for commerce students .Brand's name is Sriram Classes . I want a logo which signifies something relating to strengthning of memory / brain /Thinking. Would appreciate any creative idea that you would suggest apart from above .It should be colorful and young at the same time it should not be very casual also