Yes, it's a good idea to apply for as many scholarships as you can since is free money for college or career school. You should start researching as soon as possible and meet deadlines so you can have higher chances of scholarship success.
Would a scholarship affect my other student aid?
Yes, it would because all of your student aid added together can't be more than your cost of attendance at your college or career school.
Do you have any more questions about this?