How should I prepare for bsc computer engineering?
First of all I would like to make clear you that if you have good knowledge of loops,conditional statements,function,recursion,etc then you can focus on writing more strong syntax code.So,enroll in some basic courses at edx,coursera,Udemy,etc which will be beneficial for you in long run and also try to make your base strong in mathematics as coding is also only mathematical manipulation.
Hope it helps!!!